Jan Matthijs Van De Rijn, MD

Offices

1 location

Plan participation

Not verified

We could not verify current plan participation for this doctor. This does not mean they are out of network. Call Dr. Rijn’s office at (650) 723-4000 to ask if they take your plan before you enroll.

California Medical Board record

Licence A48323 · Current

Licensed to practise in California · since 1990 · expires 2027-09-30 · University of Amsterdam Faculty of Medicine.

No disciplinary actions, convictions, malpractice judgments or citations in this record.

Original Medicare doctor bills

$18,384

Medicare paid this office $18,384 for 219 people.

This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.

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Largest Original Medicare bills

Pathology examination of tissue using a microscope, moderately high complexity	53	$4,728	$74
Pathology examination of tissue using a microscope, intermediate complexity	63	$2,882	$34
Special stained specimen slides to examine tissue, each additional procedure	20	$2,102	$25
Pathology examination of tissue using a microscope, high complexity	14	$2,084	$130
Pathology examination of specimen during surgery, first tissue block	19	$2,076	$56

See all 10 services

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Every Original Medicare service billed

Pathology examination of tissue using a microscope, moderately high complexity	53	$4,728	$74
Pathology examination of tissue using a microscope, intermediate complexity	63	$2,882	$34
Special stained specimen slides to examine tissue, each additional procedure	20	$2,102	$25
Pathology examination of tissue using a microscope, high complexity	14	$2,084	$130
Pathology examination of specimen during surgery, first tissue block	19	$2,076	$56
Surgical pathology consultation and report on referred slides prepared elsewhere	17	$1,197	$70
Special stained specimen slides to examine tissue, initial procedure	32	$1,102	$31
Pathology examination of tissue using a microscope, moderately low complexity	65	$740	$10
Preparation of tissue for examination by removing any calcium present	42	$556	$11
Pathology examination of tissue using a microscope	12	$73	$6

Who their Medicare patients are

219 Original Medicare patients in 2024. Average age 73 · Under 65 11% · 85 and older 8% · Women 38% · Also on Medicaid 22% · Health risk score 2.13. Above the middle of the specialty; the typical pathology clinician is at 1.55.

Conditions among them: High blood pressure 75% · Chronic kidney disease 37% · Diabetes 35% · Coronary heart disease 34% · Cancer 27% · Depression 27% · Heart failure 26% · Atrial fibrillation 24% · COPD 17% · Stroke 9% · Dementia 8%.

The office billed $227,583, Medicare allowed $23,184 and paid $18,384; for 505 services of 17 kinds.

Original Medicare patients only. A risk score of 1.0 is the average Medicare patient; higher means sicker. Any count under 11 is hidden.

Year by year

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Original Medicare by year

2024	219	505	73	2.13	$227,583	$18,384
2023	350	1,116	73	2.21	$428,719	$40,291
2022	475	1,539	72	1.68	$524,231	$62,396
2021	510	1,846	72	1.62	$456,940	$80,041
2020	369	1,443	71	1.81	$331,537	$62,172
2019	282	981	72	1.74	$211,011	$41,198
2018	537	2,121	72	1.73	$484,350	$100,650
2017	347	1,318	72	1.85	$290,595	$61,413
2016	260	878	71	1.51	$186,445	$39,103
2015	639	2,191	72	1.65	$468,899	$100,785
2014	410	1,649	72	1.50	$338,017	$67,826
2013	419	1,807	70	1.39	$372,121	$80,029

Original Medicare only. A service billed for fewer than 11 people in a year is hidden, so the lines can add up to less than the year's total.

See the services billed each year

2023: 11 services

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Original Medicare services billed in 2023

Pathology examination of tissue using a microscope, moderately high complexity	98	$9,623	$75
Pathology examination of tissue using a microscope, intermediate complexity	119	$7,632	$34
Special stained specimen slides to examine tissue, each additional procedure	55	$5,820	$26
Pathology examination of specimen during surgery, first tissue block	32	$3,560	$58
Special stained specimen slides to examine tissue, initial procedure	81	$3,089	$32
Pathology examination of tissue using a microscope, high complexity	19	$3,061	$133
Surgical pathology consultation and report on referred slides prepared elsewhere	24	$1,802	$72
Pathology examination of tissue using a microscope, moderately low complexity	97	$1,279	$10
Preparation of tissue for examination by removing any calcium present	73	$1,155	$11
Surgical pathology consultation and report on referred material requiring preparation of slides	15	$1,142	$76
Pathology examination of tissue using a microscope	15	$94	$6

2022: 15 services

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Original Medicare services billed in 2022

Pathology examination of tissue using a microscope, moderately high complexity	118	$13,134	$77
Pathology examination of tissue using a microscope, intermediate complexity	192	$12,086	$35
Pathology examination of tissue using a microscope, high complexity	43	$6,543	$136
Special stained specimen slides to examine tissue, each additional procedure	65	$6,463	$26
Pathology examination of specimen during surgery, first tissue block	51	$6,306	$58
Surgical pathology consultation and report on referred slides prepared elsewhere	65	$5,071	$77
Special stained specimen slides to examine tissue, initial procedure	101	$3,532	$32
Surgical pathology consultation and report on referred material requiring preparation of slides	24	$1,945	$81
Preparation of tissue for examination by removing any calcium present	100	$1,410	$12
Special stained specimen slides to identify organisms including interpretation and report	23	$1,280	$25
Pathology examination of tissue using a microscope, moderately low complexity	93	$1,194	$10
Microscopic genetic analysis of tumor, manual	14	$815	$39
Genetic sequencing localization, initial procedure	14	$570	$41
Special stained specimen slides to examine tissue including interpretation and report	23	$483	$11
Pathology examination of tissue using a microscope	16	$108	$6

2021: 17 services

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Original Medicare services billed in 2021

Pathology examination of tissue using a microscope, moderately high complexity	120	$18,768	$79
Pathology examination of tissue using a microscope, intermediate complexity	227	$14,153	$36
Special stained specimen slides to examine tissue, each additional procedure	80	$10,868	$27
Pathology examination of specimen during surgery, first tissue block	74	$10,023	$60
Surgical pathology consultation and report on referred slides prepared elsewhere	95	$7,364	$77
Pathology examination of tissue using a microscope, high complexity	36	$5,328	$140
Special stained specimen slides to examine tissue, initial procedure	108	$4,031	$33
Surgical pathology consultation and report on referred material requiring preparation of slides	30	$2,477	$83
Special stained specimen slides to identify organisms including interpretation and report	35	$1,676	$25
Pathology examination of tissue using a microscope, moderately low complexity	73	$917	$10
Preparation of tissue for examination by removing any calcium present	64	$910	$12
Genetic sequencing localization, initial procedure	19	$768	$40
Microscopic genetic analysis of tumor, manual	11	$601	$40
Pathology examination of specimen during surgery, each additional tissue block	11	$564	$30
Special stained specimen slides to examine tissue including interpretation and report	16	$297	$11
Pathology examination of tissue using a microscope	13	$84	$6
Pathology examination of tissue using a microscope, limited examination	11	$54	$4

2020: 13 services

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Original Medicare services billed in 2020

Pathology examination of tissue using a microscope, moderately high complexity	98	$15,516	$81
Pathology examination of tissue using a microscope, intermediate complexity	172	$11,538	$36
Pathology examination of specimen during surgery, first tissue block	53	$11,434	$62
Special stained specimen slides to examine tissue, each additional procedure	61	$7,171	$28
Surgical pathology consultation and report on referred slides prepared elsewhere	41	$3,274	$78
Special stained specimen slides to examine tissue, initial procedure	84	$3,141	$33
Pathology examination of tissue using a microscope, high complexity	20	$3,033	$144
Special stained specimen slides to identify organisms including interpretation and report	25	$1,456	$26
Surgical pathology consultation and report on referred material requiring preparation of slides	15	$1,277	$85
Preparation of tissue for examination by removing any calcium present	77	$1,265	$12
Pathology examination of tissue using a microscope, moderately low complexity	70	$967	$11
Microscopic genetic analysis of tissue, manual, each additional multiplex stain procedure	11	$754	$63
Pathology examination of tissue using a microscope, limited examination	11	$42	$4

2019: 13 services

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Original Medicare services billed in 2019

Pathology examination of tissue using a microscope, moderately high complexity	72	$9,067	$79
Pathology examination of tissue using a microscope, intermediate complexity	127	$8,071	$36
Special stained specimen slides to examine tissue, each additional procedure	38	$4,939	$28
Pathology examination of specimen during surgery, first tissue block	37	$4,785	$61
Surgical pathology consultation and report on referred slides prepared elsewhere	46	$3,351	$73
Pathology examination of tissue using a microscope, high complexity	19	$2,692	$142
Special stained specimen slides to examine tissue, initial procedure	70	$2,618	$34
Surgical pathology consultation and report on referred material requiring preparation of slides	13	$1,081	$83
Microscopic genetic analysis of tissue, manual, each additional multiplex stain procedure	15	$1,033	$61
Special stained specimen slides to identify organisms including interpretation and report	21	$940	$24
Preparation of tissue for examination by removing any calcium present	42	$616	$12
Pathology examination of tissue using a microscope, moderately low complexity	40	$552	$10
Special stained specimen slides to examine tissue including interpretation and report	13	$298	$11

2018: 14 services

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Original Medicare services billed in 2018

Pathology examination of tissue using a microscope, moderately high complexity	145	$26,077	$80
Pathology examination of specimen during surgery, first tissue block	110	$21,114	$61
Pathology examination of tissue using a microscope, intermediate complexity	270	$17,915	$36
Pathology examination of tissue using a microscope, high complexity	48	$7,392	$142
Surgical pathology consultation and report on referred slides prepared elsewhere	95	$7,175	$75
Special stained specimen slides to examine tissue, each additional procedure	65	$5,922	$27
Special stained specimen slides to examine tissue, initial procedure	101	$4,195	$34
Surgical pathology consultation and report on referred material requiring preparation of slides	28	$2,303	$82
Special stained specimen slides to identify organisms including interpretation and report	48	$1,803	$25
Microscopic genetic analysis of tissue, manual, each additional multiplex stain procedure	24	$1,795	$60
Preparation of tissue for examination by removing any calcium present	94	$1,528	$12
Pathology examination of tissue using a microscope, moderately low complexity	70	$1,048	$11
Genetic sequencing localization, initial procedure	11	$462	$42
Special stained specimen slides to examine tissue including interpretation and report	21	$338	$11

2017: 12 services

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Original Medicare services billed in 2017

Pathology examination of tissue using a microscope, moderately high complexity	98	$15,523	$80
Pathology examination of specimen during surgery, first tissue block	76	$14,042	$60
Pathology examination of tissue using a microscope, intermediate complexity	192	$12,986	$36
Surgical pathology consultation and report on referred slides prepared elsewhere	55	$4,357	$78
Special stained specimen slides to examine tissue, each additional procedure	34	$3,389	$27
Pathology examination of tissue using a microscope, high complexity	21	$2,979	$142
Special stained specimen slides to examine tissue, initial procedure	56	$2,061	$34
Special stained specimen slides to identify organisms including interpretation and report	26	$1,287	$26
Microscopic genetic analysis of tissue, manual, each additional multiplex stain procedure	12	$1,075	$60
Preparation of tissue for examination by removing any calcium present	53	$903	$12
Surgical pathology consultation and report on referred material requiring preparation of slides	11	$818	$74
Pathology examination of tissue using a microscope, moderately low complexity	53	$719	$11

2016: 11 services

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Original Medicare services billed in 2016

Pathology examination of tissue using a microscope, moderately high complexity	69	$10,070	$78
Pathology examination of tissue using a microscope, intermediate complexity	139	$8,253	$35
Pathology examination of specimen during surgery, first tissue block	46	$7,379	$59
Pathology examination of tissue using a microscope, high complexity	28	$4,012	$138
Surgical pathology consultation and report on referred slides prepared elsewhere	37	$2,854	$77
Special stained specimen slides to examine tissue, each additional procedure	21	$1,691	$25
Special stained specimen slides to examine tissue, initial procedure	35	$1,256	$33
Special stained specimen slides to identify organisms including interpretation and report	23	$1,007	$25
Preparation of tissue for examination by removing any calcium present	41	$728	$12
Pathology examination of tissue using a microscope, moderately low complexity	43	$656	$10
Special stained specimen slides to examine tissue including interpretation and report	11	$231	$11

2015: 15 services

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Original Medicare services billed in 2015

Pathology examination of tissue using a microscope, moderately high complexity	167	$24,599	$78
Pathology examination of tissue using a microscope, intermediate complexity	334	$24,017	$35
Pathology examination of specimen during surgery, first tissue block	106	$18,661	$59
Pathology examination of tissue using a microscope, high complexity	71	$10,554	$139
Surgical pathology consultation and report on referred slides prepared elsewhere	104	$7,791	$74
Surgical pathology, gross and microscopic examinations, for prostate needle biopsy, any method	19	$3,090	$163
Special stained specimen slides to examine tissue, each additional procedure	44	$2,787	$20
Special stained specimen slides to examine tissue, initial procedure	73	$2,661	$33
Special stained specimen slides to identify organisms including interpretation and report	40	$1,861	$24
Preparation of tissue for examination by removing any calcium present	104	$1,674	$12
Pathology examination of tissue using a microscope, moderately low complexity	75	$1,100	$10
Microscopic genetic analysis of tissue, manual, initial procedure	11	$451	$41
Special stained specimen slides to examine tissue including interpretation and report	24	$416	$11
Pathology examination of tissue using a microscope, limited examination	25	$147	$4
Pathology examination of tissue using a microscope	15	$115	$6

2014: 12 services

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Original Medicare services billed in 2014

Pathology examination of tissue using a microscope, intermediate complexity	220	$22,033	$35
Pathology examination of tissue using a microscope, moderately high complexity	95	$13,498	$76
Pathology examination of specimen during surgery, first tissue block	77	$11,013	$57
Pathology examination of tissue using a microscope, high complexity	55	$7,530	$134
Surgical pathology consultation and report on referred slides prepared elsewhere	73	$4,867	$65
Immunohistochemistry or immunocytochemistry, per specimen; first single or multiplex antibody stain	60	$1,929	$28
Immunohistochemistry or immunocytochemistry, per specimen; each additional single or multiplex antibody stain (list separately in addition to code for primary procedure)	46	$1,669	$11
Preparation of tissue for examination by removing any calcium present	55	$1,008	$11
Special stained specimen slides to identify organisms including interpretation and report	17	$820	$24
Pathology examination of tissue using a microscope, moderately low complexity	40	$603	$10
Special stained specimen slides to examine tissue including interpretation and report	23	$335	$11
Pathology examination of tissue using a microscope, limited examination	21	$90	$4

2013: 11 services

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Original Medicare services billed in 2013

Pathology examination of tissue using a microscope, intermediate complexity	274	$22,633	$33
Pathology examination of tissue using a microscope, moderately high complexity	114	$16,571	$74
Pathology examination of specimen during surgery, first tissue block	93	$16,515	$56
Pathology examination of tissue using a microscope, high complexity	57	$8,021	$131
Special stained specimen slides to examine tissue, initial procedure	64	$7,802	$38
Surgical pathology consultation and report on referred slides prepared elsewhere	42	$3,789	$74
Preparation of tissue for examination by removing any calcium present	57	$835	$11
Special stained specimen slides to identify organisms including interpretation and report	22	$816	$24
Pathology examination of tissue using a microscope, moderately low complexity	45	$706	$10
Special stained specimen slides to examine tissue including interpretation and report	32	$587	$11
Pathology examination of tissue using a microscope, limited examination	13	$54	$4

Medicaid work

$2,905 in 2024

Medicaid paid $2,905 for 78 billed services this clinician did in 2024, up to 19 people in a month for one service.

Medicaid and CHIP claims where this clinician did the service, fee-for-service and managed care together. Any month with fewer than 11 patients is hidden, so small Medicaid practices undercount.

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Largest Medicaid services in 2024

TISSUE EXAM BY PATHOLOGIST	28	$1,732
TISSUE EXAM BY PATHOLOGIST	16	$583
TISSUE EXAM BY PATHOLOGIST	19	$499
DECALCIFICATION PROCEDURE	15	$91

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Medicaid work by year

2024	78	4	19	$2,905
2023	85	3	15	$4,289
2022	73	4	19	$1,962
2021	77	3	18	$3,013
2020	45	2	17	$1,300
2019	59	3	23	$1,432
2018	105	3	22	$4,658

See the largest Medicaid services in earlier years

2023

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Largest Medicaid services in 2023

TISSUE EXAM BY PATHOLOGIST	48	$3,440
TISSUE EXAM BY PATHOLOGIST	17	$521
TISSUE EXAM BY PATHOLOGIST	20	$329

2022

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Largest Medicaid services in 2022

TISSUE EXAM BY PATHOLOGIST	34	$1,250
TISSUE EXAM BY PATHOLOGIST	14	$430
TISSUE EXAM BY PATHOLOGIST	12	$234
DECALCIFICATION PROCEDURE	13	$48

2021

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Largest Medicaid services in 2021

TISSUE EXAM BY PATHOLOGIST	43	$1,703
TISSUE EXAM BY PATHOLOGIST	20	$1,230
DECALCIFICATION PROCEDURE	14	$80

2020

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Largest Medicaid services in 2020

TISSUE EXAM BY PATHOLOGIST	30	$1,231
DECALCIFICATION PROCEDURE	15	$69

2019

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Largest Medicaid services in 2019

TISSUE EXAM BY PATHOLOGIST	27	$919
TISSUE EXAM BY PATHOLOGIST	20	$429
DECALCIFICATION PROCEDURE	12	$84

2018

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Largest Medicaid services in 2018

TISSUE EXAM BY PATHOLOGIST	78	$3,342
TISSUE EXAM BY PATHOLOGIST	13	$914
TISSUE EXAM BY PATHOLOGIST	14	$402

Checkups this office reported

Medicare did not publish checkup rates for this clinician.

Medicare’s overall office score: 76.5 / 100; Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.

Professional record

NPI: 1891848669
Licence: CA A48323California A48323: Current · expires 2027-09-30

More record details

Sole proprietor: No
Medicaid ID: CA 00A483230
Taxonomy: Federal specialty code 207ZP0102X (207ZP0102X); Federal specialty code 207ZP0101X (207ZP0101X)
Mailing address: 300 Pasteur Dr, Stanford, CA, 94305
NPI first listed: 2007-01-18
NPI last updated: 2026-09-09
NPI record certified: 2026-09-09

This is when the NPI record was last certified, not a medical board exam.