Allison Chadwick, PA

Offices

4 locations · Sutter Bay Medical Foundation · 3,783 clinicians in this group

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Plan participation

Not verified

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California Medical Board record

Licence A52991 · Current

Licensed to practise in California · since 1994 · expires 2027-09-30 · University of El Salvador Faculty of Medicine.

Matched on the licence number without its letter prefix; check the name before relying on it.

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

Original Medicare doctor bills

$38,984

Medicare paid this office $38,984 for 397 people.

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

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Largest Original Medicare bills

Return visit (30+ min)	149	$12,785	$85
Short return visit (20+ min)	118	$7,306	$60
New patient visit (45+ min)	59	$5,396	$91
Detection test by multiplex amplified probe technique for severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (covid-19), influenza virus types a and b, and respiratory syncytial virus	29	$4,193	$140
New patient visit (30+ min)	48	$2,939	$61

See all 12 services

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Every Original Medicare service billed

Return visit (30+ min)	149	$12,785	$85
Short return visit (20+ min)	118	$7,306	$60
New patient visit (45+ min)	59	$5,396	$91
Detection test by multiplex amplified probe technique for severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (covid-19), influenza virus types a and b, and respiratory syncytial virus	29	$4,193	$140
New patient visit (30+ min)	48	$2,939	$61
Long return visit (40+ min)	18	$2,206	$123
Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen	14	$704	$50
Detection test by immunoassay with direct visual observation for streptococcus, group a (strep)	17	$271	$16
Automated urinalysis test	70	$158	$2
Injection of drug or substance under skin or into muscle	14	$131	$9
Inhalation treatment for airway obstruction or sputum production	13	$81	$6
Blood glucose (sugar) test performed by hand-held instrument	20	$64	$3

Who their Medicare patients are

397 Original Medicare patients in 2024. Average age 75 · Under 65 5% · 85 and older 14% · Women 64% · Also on Medicaid 13% · Health risk score 1.04. At or below the middle of the specialty; the typical physician assistant clinician is at 1.31.

Conditions among them: High blood pressure 55% · Depression 21% · Coronary heart disease 20% · Atrial fibrillation 19% · Chronic kidney disease 18% · Cancer 18% · Diabetes 16% · Heart failure 14% · COPD 10% · Stroke 6% · Dementia 5%.

The office billed $178,937, Medicare allowed $53,751 and paid $38,984; for 692 services of 43 kinds; $162 of it was for drugs given in the office and $38,822 for care.

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	397	692	75	1.04	$178,937	$38,984
2023	393	687	74	0.94	$163,119	$37,283
2022	400	696	75	0.99	$159,407	$37,223
2021	268	445	73	1.01	$105,588	$26,523
2020	116	161	72	0.95	$35,205	$7,057
2019	42	76	71	1.54	$22,269	$3,567
2018	177	389	68	1.99	$124,237	$23,187
2017	87	162	67	1.77	$48,876	$8,897
2016	88	179	66	1.56	$46,723	$8,585

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: 10 services

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Original Medicare services billed in 2023

Return visit (30+ min)	129	$11,313	$87
Short return visit (20+ min)	130	$7,984	$60
New patient visit (45+ min)	55	$6,336	$115
New patient visit (30+ min)	60	$3,759	$63
Detection test by multiplex amplified probe technique for severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (covid-19), influenza virus types a and b, and respiratory syncytial virus	12	$1,677	$140
Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen	25	$1,257	$50
Detection test by immunoassay with direct visual observation for streptococcus, group a (strep)	11	$178	$16
Injection of drug or substance under skin or into muscle	15	$174	$10
Removal of impacted ear wax by washing	15	$165	$11
Automated urinalysis test	61	$134	$2

2022: 10 services

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Original Medicare services billed in 2022

Return visit (30+ min)	109	$9,437	$84
Short return visit (20+ min)	142	$9,079	$62
New patient visit (45+ min)	62	$6,956	$112
New patient visit (30+ min)	66	$4,003	$61
Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen	53	$2,789	$51
Long return visit (40+ min)	11	$1,422	$129
Diphtheria and tetanus vaccine (7 years or older)	15	$307	$20
Administration of vaccine	15	$197	$13
Automated urinalysis test	70	$158	$2
Blood glucose (sugar) test performed by hand-held instrument	12	$39	$3

2021: 7 services

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Original Medicare services billed in 2021

Return visit (30+ min)	103	$9,139	$89
New patient visit (45+ min)	46	$5,702	$124
Short return visit (20+ min)	67	$4,181	$61
New patient visit (30+ min)	33	$2,313	$70
Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen	28	$1,437	$51
Detection test by immunoassay with direct visual observation for streptococcus, group a (strep)	13	$215	$17
Automated urinalysis test	45	$101	$2

2020: 3 services

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Original Medicare services billed in 2020

Return visit (30+ min)	62	$3,801	$61
Short return visit (20+ min)	51	$2,624	$51
Automated urinalysis test	16	$36	$2

2018: 5 services

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Original Medicare services billed in 2018

Emergency department visit with high level of medical decision making	97	$14,014	$140
Emergency department visit with moderate level of medical decision making	34	$3,307	$97
Emergency department visit with low level of medical decision making	42	$2,051	$49
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	84	$656	$7
X-ray of chest, 1 view	44	$359	$8

2017: 4 services

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Original Medicare services billed in 2017

Emergency department visit with high level of medical decision making	28	$3,536	$126
Emergency department visit with moderate level of medical decision making	29	$2,575	$86
Emergency department visit with low level of medical decision making	25	$1,179	$45
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	21	$142	$6

2016: 5 services

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Original Medicare services billed in 2016

Emergency department visit with high level of medical decision making	40	$4,823	$121
Emergency department visit with moderate level of medical decision making	23	$1,887	$82
Emergency department visit with low level of medical decision making	18	$770	$43
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	30	$188	$6
X-ray of chest, 1 view, front	20	$141	$7

Medicaid work

$29,876 in 2019

Medicaid paid $29,876 for 541 billed services this clinician did in 2019, up to 111 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 2019

Service	234	$16,436
Miscellaneous therapeutic items and supplies, retail purchases, not otherwise classified; identify product in "remarks"	38	$9,440
Unclassified drugs	96	$2,432
Radiologic examination, chest; single view	17	$448
Electrocardiogram, routine ECG with at least 12 leads; tracing only, without interpretation and report	17	$418
Blood count; complete (CBC), automated (Hgb, Hct, RBC, WBC and platelet count)	68	$291
COMPREHENSIVE METABOLIC PANEL	28	$202
Gonadotropin, chorionic (hCG); quantitative	16	$117
ASSAY OF LIPASE	15	$70
Urinalysis, by dip stick or tablet reagent for bilirubin, glucose, hemoglobin, ketones, leukocytes, nitrite, pH, protein, specific gravity, urobilinogen, any number of these constituents; automated, with microscopy	12	$22

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Medicaid work by year

2019	541	10	111	$29,876
2018	44	1	15	$1,733

See the largest Medicaid services in earlier years

2018

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Largest Medicaid services in 2018

Service	44	$1,733

Drugs they prescribed that Part D paid

$5,119

Pharmacies billed $5,119 in 2024.

This is pharmacy cost, not the office bill, and not what patients paid.

306 generic and fewer than 11 brand-name prescriptions · $5,119 in drug cost · 167 antibiotic prescriptions to 143 people.

Part D prescriptions only. The opioid rate is opioid prescriptions as a share of all this clinician's Part D prescriptions; surgeons and pain specialists run higher than others, so it is shown against the same specialty.

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Largest Part D drug costs

Amoxicillin-Clavulanate Potass	44	$332	$7
Cephalexin	42	$248	$6
Cefdinir	14	$222	$16
Mupirocin	24	$150	$6
Doxycycline Monohydrate	19	$141	$7

See all 10 drugs

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Every Part D drug this clinician prescribed

Amoxicillin-Clavulanate Potass	44	$332	$7
Cephalexin	42	$248	$6
Cefdinir	14	$222	$16
Mupirocin	24	$150	$6
Doxycycline Monohydrate	19	$141	$7
Fluticasone Propionate	12	$92	$8
Triamcinolone Acetonide	13	$43	$3
Azithromycin	13	$38	$3
Prednisone	16	$24	$1
Paxlovid	11	$0	$0

Year by year

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Part D prescribing by year

2024	337	238	None	None	$5,119
2023	280	216	None	10%	$4,890
2022	270	215	6% (16)	None	$9,608
2021	130	100	None	None	$6,314
2020	60	48	None	None	$777
2019	38	28	None	None	$1,485
2018	102	71	18% (18)	None	$1,026
2017	58	37	None	0%	$339
2016	70	45	20% (14)	None	$793

Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.

See the drugs prescribed each year

2023: 8 drugs

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Part D drugs prescribed in 2023

Albuterol Sulfate Hfa	12	$391	$33
Cefdinir	13	$335	$26
Amoxicillin-Clavulanate Potass	28	$294	$10
Cephalexin	31	$226	$7
Nitrofurantoin Mono-Macro	15	$208	$14
Mupirocin	16	$135	$8
Paxlovid (Eua)	12	$114	$10
Prednisone	18	$65	$4

2022: 10 drugs

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Part D drugs prescribed in 2022

Albuterol Sulfate Hfa	12	$450	$38
Cephalexin	41	$364	$9
Amoxicillin-Clavulanate Potass	16	$216	$13
Paxlovid (Eua)	20	$207	$10
Mupirocin	14	$152	$11
Azithromycin	15	$80	$5
Sulfamethoxazole-Trimethoprim	14	$53	$4
Prednisone	13	$52	$4
Hydrocodone-Acetaminophen	11	$36	$3
Cyclobenzaprine	11	$36	$3

2021: 2 drugs

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Part D drugs prescribed in 2021

Cephalexin	29	$239	$8
Amoxicillin-Clavulanate Potass	15	$203	$14

2020: 1 drug

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Part D drugs prescribed in 2020

Cephalexin	11	$74	$7

2018: 2 drugs

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Part D drugs prescribed in 2018

Cephalexin	16	$100	$6
Hydrocodone-Acetaminophen	17	$69	$4

2017: 1 drug

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Part D drugs prescribed in 2017

Cephalexin	14	$90	$6

2016: 2 drugs

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Part D drugs prescribed in 2016

Cephalexin	16	$104	$6
Hydrocodone-Acetaminophen	13	$66	$5

Professional record

NPI: 1689048019
Licence: CA 52991California A52991: Current · expires 2027-09-30
Group: Sutter Bay Medical Foundation
Gender: Female

More record details

Sole proprietor: No
Taxonomy: Physician assistant (363A00000X)
Mailing address: 325 Distel Cir, Los Altos, CA, 94022
NPI first listed: 2015-11-23
NPI last updated: 2019-12-04

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