Daniel R Katzenberg, MD, PHD

Offices

1 location

Plans that list them

20 plans · 4 carriers

A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Katzenberg’s office at (408) 885-5440 to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.

20 of 20 plans

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Plans whose provider directory lists this clinician

Alignment Health Advantage PPO (PPO)	Alignment Health Plan	Listed	Oct 3, 2026
Alignment Health BreathEasy (HMO C-SNP)	Alignment Health Plan	Listed	Oct 3, 2026
Alignment Health Clarity (HMO C-SNP)	Alignment Health Plan	Listed	Oct 3, 2026
Alignment Health Harmony (HMO)	Alignment Health Plan	Listed	Oct 3, 2026
Alignment Health Heart & Diabetes (HMO C-SNP)	Alignment Health Plan	Listed	Oct 3, 2026
Alignment Health Heart & Diabetes CalPlus (HMO C-SNP)	Alignment Health Plan	Listed	Oct 3, 2026
Alignment Health Heart & Diabetes Care (HMO C-SNP)	Alignment Health Plan	Listed	Sep 28, 2026
Alignment Health Heart & Diabetes Choice (HMO C-SNP)	Alignment Health Plan	Listed	Sep 28, 2026
Alignment Health Honor+ Plan (HMO)	Alignment Health Plan	Listed	Oct 3, 2026
Alignment Health My Choice CalCare (HMO)	Alignment Health Plan	Listed	Oct 3, 2026
Alignment Health Silicon (HMO C-SNP)	Alignment Health Plan	Listed	Oct 3, 2026
Alignment Health smartHMO (HMO)	Alignment Health Plan	Listed	Oct 3, 2026
Alignment Health the ONE (HMO)	Alignment Health Plan	Listed	Oct 3, 2026
Anthem Full Dual Advantage Aligned (HMO D-SNP)	Anthem Blue Cross	Listed	Oct 3, 2026
Anthem Medicare Advantage (HMO-POS)	Anthem Blue Cross	Listed	Oct 3, 2026
Anthem Prime (HMO-POS)	Anthem Blue Cross Partnership Plan	Listed	Oct 3, 2026
Central Health Classic Care Plan III (HMO)	Central Health Medicare Plan	Listed	Aug 15, 2026
Central Health Dual Access Plan (HMO D-SNP)	Central Health Medicare Plan	Listed	Aug 15, 2026
Central Health Embrace Choice Plan (HMO C-SNP)	Central Health Medicare Plan	Listed	Aug 15, 2026
Central Health Valor Care Plan (HMO)	Central Health Medicare Plan	Listed	Aug 15, 2026

California Medical Board record

Licence G71675 · Current

Licensed to practise in California · since 1991 · expires 2027-03-31 · Albert Einstein College of Medicine of Yeshiva University.

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

Original Medicare doctor bills

$33,934

Medicare paid this office $33,934 for 124 people.

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

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Largest Original Medicare bills

Sleep study in sleep lab	17	$8,644	$508
Short return visit (20+ min)	86	$7,962	$81
Return visit (30+ min)	46	$6,762	$117
Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's	109	$2,070	$15
Therapy procedure using a positive pressure ventilator	20	$1,725	$62

See all 7 services

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Every Original Medicare service billed

Sleep study in sleep lab	17	$8,644	$508
Short return visit (20+ min)	86	$7,962	$81
Return visit (30+ min)	46	$6,762	$117
Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's	109	$2,070	$15
Therapy procedure using a positive pressure ventilator	20	$1,725	$62
Sleep study including heart rate, breathing, and sleep time	13	$1,695	$130
New patient visit (30+ min)	12	$1,024	$85

Who their Medicare patients are

124 Original Medicare patients in 2024. Average age 74 · Women 43% · Health risk score 1.13. At or below the middle of the specialty; the typical sleep medicine clinician is at 1.21.

Conditions among them: High blood pressure 75% · Coronary heart disease 38% · Diabetes 29% · Depression 24% · Atrial fibrillation 23% · Heart failure 19% · Chronic kidney disease 19% · Cancer 19% · COPD 11% · Stroke 11%.

The office billed $80,380, Medicare allowed $47,138 and paid $33,934; for 380 services of 10 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	124	380	74	1.13	$80,380	$33,934
2023	222	511	73	1.01	$146,000	$64,898
2022	222	514	72	0.96	$125,855	$58,794
2021	202	366	72	1.07	$97,020	$46,858
2020	36	42	72	0.79	$12,595	$4,552
2019	159	336	74	0.94	$143,450	$52,299
2018	77	131	75	0.91	$60,875	$9,624
2017	76	130	75	1.00	$58,700	$9,507
2016	62	123	72	0.96	$53,325	$8,609
2015	65	126	72	1.09	$55,350	$9,269
2014	61	117	72	0.92	$54,400	$9,000
2013	115	242	71	0.82	$102,375	$16,809

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: 7 services

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Original Medicare services billed in 2023

Short return visit (20+ min)	142	$17,588	$79
Sleep study in sleep lab	27	$15,308	$567
Return visit (30+ min)	90	$14,621	$111
Therapy procedure using a positive pressure ventilator	44	$2,885	$57
Sleep study including heart rate, breathing, and sleep time	17	$2,374	$132
New patient visit (30+ min)	22	$2,263	$103
New patient visit (45+ min)	12	$1,560	$130

2022: 7 services

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Original Medicare services billed in 2022

Return visit (30+ min)	114	$23,093	$107
Short return visit (20+ min)	122	$13,000	$81
Sleep study in sleep lab	16	$11,383	$711
Therapy procedure using a positive pressure ventilator	41	$2,934	$51
New patient visit (30+ min)	20	$1,815	$91
New patient visit (45+ min)	12	$1,583	$132
Home sleep test (hst) with type iii portable monitor, unattended; minimum of 4 channels: 2 respiratory movement/airflow, 1 ecg/heart rate and 1 oxygen saturation	14	$1,277	$91

2021: 6 services

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Original Medicare services billed in 2021

Short return visit (20+ min)	141	$16,621	$86
Sleep study in sleep lab	17	$11,331	$667
Return visit (30+ min)	49	$7,072	$120
New patient visit (30+ min)	26	$2,263	$87
Therapy procedure using a positive pressure ventilator	39	$1,959	$45
Home sleep test (hst) with type iii portable monitor, unattended; minimum of 4 channels: 2 respiratory movement/airflow, 1 ecg/heart rate and 1 oxygen saturation	12	$1,717	$143

2020: 1 service

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Original Medicare services billed in 2020

Return visit (30+ min)	24	$1,899	$76

2019: 7 services

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Original Medicare services billed in 2019

Return visit (30+ min)	109	$15,547	$98
Sleep study in sleep lab	18	$12,738	$708
Sleep study in sleep lab with continuous airway pressure (6 years or older)	14	$9,210	$658
New patient visit (45+ min)	38	$5,248	$138
Short return visit (20+ min)	26	$2,739	$65
New patient visit (30+ min)	20	$2,015	$101
Therapy procedure using a positive pressure ventilator	26	$1,909	$62

2018: 3 services

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Original Medicare services billed in 2018

Short return visit (20+ min)	41	$3,628	$59
New patient visit (30+ min)	38	$3,251	$86
Return visit (30+ min)	28	$2,746	$86

2017: 3 services

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Original Medicare services billed in 2017

Short return visit (20+ min)	49	$4,824	$62
New patient visit (30+ min)	38	$3,321	$87
Return visit (30+ min)	13	$1,362	$97

2016: 2 services

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Original Medicare services billed in 2016

Short return visit (20+ min)	46	$5,707	$63
New patient visit (30+ min)	32	$2,902	$91

2015: 2 services

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Original Medicare services billed in 2015

Short return visit (20+ min)	49	$5,679	$63
New patient visit (30+ min)	36	$3,590	$100

2014: 2 services

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Original Medicare services billed in 2014

Short return visit (20+ min)	39	$4,652	$67
New patient visit (30+ min)	47	$4,306	$92

2013: 2 services

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Original Medicare services billed in 2013

Short return visit (20+ min)	102	$12,481	$63
New patient visit (30+ min)	44	$4,218	$96

Medicaid work

$153,304 in 2024

Medicaid paid $153,304 for 3,938 billed services this clinician did in 2024, up to 147 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

Clinic visit/encounter, all-inclusive	189	$98,281
TX SPEECH LANG VOICE COMMJ&/AUD PROC DO GROUP	2,587	$42,203
TX SPEECH LANG VOICE COMMJ&/AUD PROC DO INDIV	219	$9,373
Polysomnography; age 6 years or older, sleep staging with 4 or more additional parameters of sleep, attended by a technologist	229	$3,303
Polysomnography; younger than 6 years, sleep staging with 4 or more additional parameters of sleep, attended by a technologist	25	$144
Pain severity quantified; no pain present (COA) (ONC)	28	$0
Medication list documented in medical record (COA)	158	$0
Most recent systolic blood pressure less than 130 mm Hg (DM) (HTN, CKD, CAD)	75	$0
Most recent diastolic blood pressure less than 80 mm Hg (HTN, CKD, CAD) (DM)	131	$0
Return visit (30+ min)	297	$0

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Medicaid work by year

2024	3,938	10	147	$153,304
2023	4,370	7	233	$97,434
2022	9,100	2	210	$154,648
2021	23,202	4	245	$431,902
2020	27,439	2	253	$497,040
2019	47,469	2	337	$679,267
2018	27,906	2	336	$380,357

See the largest Medicaid services in earlier years

2023

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Largest Medicaid services in 2023

TX SPEECH LANG VOICE COMMJ&/AUD PROC DO GROUP	4,012	$63,860
Clinic visit/encounter, all-inclusive	53	$27,078
Polysomnography; age 6 years or older, sleep staging with 4 or more additional parameters of sleep, attended by a technologist	201	$3,490
TX SPEECH LANG VOICE COMMJ&/AUD PROC DO INDIV	68	$3,006
Most recent systolic blood pressure less than 130 mm Hg (DM) (HTN, CKD, CAD)	12	$0
Most recent diastolic blood pressure less than 80 mm Hg (HTN, CKD, CAD) (DM)	12	$0
Polysomnography; younger than 6 years, sleep staging with 4 or more additional parameters of sleep, attended by a technologist	12	$0

2022

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Largest Medicaid services in 2022

TX SPEECH LANG VOICE COMMJ&/AUD PROC DO GROUP	8,661	$136,639
TX SPEECH LANG VOICE COMMJ&/AUD PROC DO INDIV	439	$18,009

2021

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Largest Medicaid services in 2021

TX SPEECH LANG VOICE COMMJ&/AUD PROC DO GROUP	20,589	$319,030
TX SPEECH LANG VOICE COMMJ&/AUD PROC DO INDIV	2,524	$105,042
Return visit (30+ min)	38	$4,162
Short return visit (20+ min)	51	$3,669

2020

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Largest Medicaid services in 2020

TX SPEECH LANG VOICE COMMJ&/AUD PROC DO GROUP	24,339	$367,634
TX SPEECH LANG VOICE COMMJ&/AUD PROC DO INDIV	3,100	$129,406

2019

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Largest Medicaid services in 2019

TX SPEECH LANG VOICE COMMJ&/AUD PROC DO GROUP	44,712	$581,524
TX SPEECH LANG VOICE COMMJ&/AUD PROC DO INDIV	2,757	$97,743

2018

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Largest Medicaid services in 2018

TX SPEECH LANG VOICE COMMJ&/AUD PROC DO GROUP	26,843	$342,844
TX SPEECH LANG VOICE COMMJ&/AUD PROC DO INDIV	1,063	$37,513

Drugs they prescribed that Part D paid

$1,516

Pharmacies billed $1,516 in 2024.

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

Opioids were 0% of their Part D prescriptions (0 of 71) in 2024. At or below the middle of the specialty; the typical sleep medicine clinician is at 0%.

71 generic and 0 brand-name prescriptions · $1,516 in drug cost.

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

Clobazam	11	$1,205	$110
Zolpidem	33	$99	$3

Year by year

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Part D prescribing by year

2024	71	22	0% (0)	0%	$1,516
2023	90	36	0% (0)	0%	$2,712
2022	104	23	0% (0)	0%	$3,170
2021	62	19	0% (0)	0%	$992
2020	34	None	0% (0)	0%	$2,863
2019	60	12	0% (0)	None	$2,366
2018	55	None	0% (0)	0%	$2,509
2017	57	None	0% (0)	None	$1,473
2016	84	15	0% (0)	None	$7,171
2015	141	None	None	9%	$12,715
2014	136	12	0% (0)	13%	$11,905
2013	167	21	0% (0)	13%	$18,171

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

See the drugs prescribed each year

2023: 3 drugs

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Part D drugs prescribed in 2023

Clobazam	11	$1,839	$167
Zolpidem	48	$248	$5
Clonazepam	11	$167	$15

2022: 3 drugs

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Part D drugs prescribed in 2022

Clobazam	13	$2,007	$154
Zolpidem	49	$456	$9
Clonazepam	13	$45	$3

2021: 1 drug

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Part D drugs prescribed in 2021

Zolpidem	35	$415	$12

2020: 2 drugs

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Part D drugs prescribed in 2020

Clobazam	11	$2,646	$241
Zolpidem	12	$45	$4

2019: 1 drug

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Part D drugs prescribed in 2019

Zolpidem	26	$333	$13

2018: 3 drugs

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Part D drugs prescribed in 2018

Butalbital-Acetaminophen	14	$1,174	$84
Modafinil	11	$327	$30
Zolpidem	15	$136	$9

2017: 1 drug

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Part D drugs prescribed in 2017

Oxcarbazepine	14	$608	$43

2016: 2 drugs

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Part D drugs prescribed in 2016

Oxcarbazepine	26	$1,129	$43
Zolpidem	13	$133	$10

2015: 8 drugs

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Part D drugs prescribed in 2015

Diastat Acudial	12	$3,804	$317
Gabapentin	14	$2,537	$181
Lamotrigine	12	$2,248	$187
Phenobarbital	13	$2,144	$165
Oxcarbazepine	24	$932	$39
Carbidopa-Levodopa	13	$125	$10
Clonazepam	14	$112	$8
Risperidone	12	$68	$6

2014: 7 drugs

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Part D drugs prescribed in 2014

Gabapentin	13	$2,662	$205
Lamotrigine	11	$2,156	$196
Phenobarbital	12	$2,024	$169
Oxcarbazepine	12	$458	$38
Fluticasone Propionate	19	$208	$11
Carbidopa-Levodopa	14	$180	$13
Clonazepam	14	$105	$7

2013: 7 drugs

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Part D drugs prescribed in 2013

Gabapentin	17	$2,290	$135
Phenobarbital	12	$776	$65
Pramipexole Dihydrochloride	13	$743	$57
Topiramate	25	$399	$16
Fluticasone Propionate	15	$281	$19
Carbidopa-Levodopa	14	$171	$12
Zolpidem	19	$142	$7

Money from drug and device companies

$204 in 2025

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Industry payments by year

2025	2	3	None	$204
2024	3	14	None	$444
2023	4	21	None	$827
2022	2	18	None	$514
2021	1	3	None	$62
2020	1	1	None	$19
2019	1	6	None	$160

Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.

A payment is not proof that care is biased.

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Payments by company

Jazz Pharmaceuticals	None	$104	1 payment Meals · 2025-06-09 · $104
Harmony Biosciences	Wakix	$100	2 payments Education · 2025-06-26 · $55 Meals for Wakix · 2025-06-25 · $45

See all 3 published payments

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Every published payment

Harmony Biosciences	Education · 2025-06-26	None	$55
Harmony Biosciences	Meals · 2025-06-25	Wakix	$45
Jazz Pharmaceuticals	Meals · 2025-06-09	None	$104

See earlier years (2024, 2023, 2022, 2021, 2020, 2019)

2024: $444

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Payments by company in 2024

Jazz Pharmaceuticals	Xywav	$217	5 payments Meals for Xywav · 2024-06-19 · $30 Meals for Xywav · 2024-06-04 · $100 Meals for Xywav · 2024-05-01 · $43 Meals for Xywav · 2024-03-26 · $14 Meals for Xywav · 2024-03-14 · $29
Harmony Biosciences	Wakix	$171	6 payments Meals for Wakix · 2024-07-30 · $48 Meals for Wakix · 2024-07-30 · $2 Meals for Wakix · 2024-07-01 · $27 Meals for Wakix · 2024-04-30 · $10 Meals for Wakix · 2024-04-10 · $44 Meals for Wakix · 2024-01-24 · $41
Inspire Medical Systems	Inspire	$56	3 payments Meals for Inspire · 2024-05-14 · $24 Meals for Inspire · 2024-01-24 · $17 Meals for Inspire · 2024-01-16 · $15

2023: $827

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Payments by company in 2023

Harmony Biosciences	Wakix	$582	15 payments Meals for Wakix · 2023-12-27 · $40 Meals for Wakix · 2023-12-13 · $49 Meals for Wakix · 2023-11-21 · $31 Meals for Wakix · 2023-10-12 · $40 Meals for Wakix · 2023-09-13 · $36 Meals for Wakix · 2023-08-22 · $9 Meals for Wakix · 2023-08-16 · $34 Meals for Wakix · 2023-07-27 · $125 Meals for Wakix · 2023-07-11 · $44 Meals for Wakix · 2023-06-21 · $38 Meals for Wakix · 2023-05-23 · $42 Meals for Wakix · 2023-04-17 · $32 Meals for Wakix · 2023-03-29 · $39 Meals for Wakix · 2023-01-17 · $4 Meals for Wakix · 2023-01-17 · $20
Inspire Medical Systems	Inspire	$106	2 payments Meals for Inspire · 2023-08-22 · $85 Meals for Inspire · 2023-08-15 · $21
Jazz Pharmaceuticals	Xywav	$102	2 payments Meals for Xywav · 2023-06-06 · $71 Meals for Xywav · 2023-06-04 · $31
Axsome Therapeutics	Sunosi	$37	2 payments Meals for Sunosi · 2023-10-16 · $23 Meals for Sunosi · 2023-09-18 · $14

2022: $514

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Payments by company in 2022

Harmony Biosciences	Wakix	$314	11 payments Meals for Wakix · 2022-12-20 · $39 Meals for Wakix · 2022-11-16 · $39 Meals for Wakix · 2022-11-01 · $11 Meals for Wakix · 2022-10-13 · $18 Meals for Wakix · 2022-09-20 · $20 Meals for Wakix · 2022-08-09 · $34 Meals for Wakix · 2022-06-29 · $36 Meals for Wakix · 2022-06-29 · $4 Meals for Wakix · 2022-05-25 · $20 Education for Wakix · 2022-05-16 · $45 Meals for Wakix · 2022-02-02 · $47
Jazz Pharmaceuticals	Xywav	$201	7 payments Education for Xyrem · 2022-11-22 · $100 Meals for Xywav · 2022-09-26 · $27 Meals for Xywav · 2022-08-24 · $14 Meals for Xywav · 2022-08-02 · $15 Meals for Xywav · 2022-06-27 · $16 Meals for Xywav · 2022-03-31 · $24 Meals for Xywav · 2022-03-16 · $5

2021: $62

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Payments by company in 2021

Harmony Biosciences	Wakix	$62	3 payments Meals for Wakix · 2021-12-07 · $29 Meals for Wakix · 2021-08-31 · $18 Meals for Wakix · 2021-05-10 · $14

2020: $19

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Payments by company in 2020

Jazz Pharmaceuticals	Sunosi	$19	1 payment Meals for Sunosi · 2020-02-26 · $19

2019: $160

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Payments by company in 2019

Jazz Pharmaceuticals	Xyrem	$160	6 payments Meals for Sunosi · 2019-08-26 · $7 Meals for Sunosi · 2019-07-11 · $20 Meals for Xyrem · 2019-06-11 · $64 Meals for Xyrem · 2019-06-10 · $41 Meals for Xyrem · 2019-05-15 · $13 Meals for Xyrem · 2019-04-01 · $14

Checkups this office reported

Medicare did not publish checkup rates for this clinician.

Medicare’s overall office score: 74.9 / 100; Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.

Professional record

NPI: 1235193319
Licence: CA G71675California G71675: Current · expires 2027-03-31

More record details

Sole proprietor: No
Medicaid ID: CA 00G716750
Taxonomy: Federal specialty code 2084N0402X (2084N0402X); Federal specialty code 207RS0012X (207RS0012X); Pediatrics (208000000X)
Mailing address: 25005 Oneonta Dr, Los Altos Hills, CA, 94022
NPI first listed: 2006-04-14
NPI last updated: 2024-05-13
NPI record certified: 2024-05-13

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