What is Jay Zimmerman's specialty?

Jay Zimmerman (NPI 1396789731) is a Medicare-billing provider whose primary specialty is Dermatology in Walnut Creek, CA.

Where does Jay Zimmerman practice?

Jay Zimmerman practices in Walnut Creek, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1396789731.

How much does Medicare pay Jay Zimmerman?

Jay Zimmerman (NPI 1396789731) received approximately $709K in total Medicare Part B payments, serving 1,571 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1396789731

Jay ZimmermanM.D.

PRACTICEGOLDEN STATE DERMATOLOGY, INC.See all providers at this practice →

DermatologyWalnut Creek, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

4,256

Unique beneficiaries

—

Total services

9,689

Distinct HCPCS

Medicare payment

$686K

Peer benchmark

Total Medicare services vs. 1,546 Dermatology providers in CA — top quintile (cohort median 2,504).

PRESCRIBING · PART D · 2024

Total Rx claims

1,854

Beneficiaries

—

Total drug cost

$625K

Distinct drugs

Brand share

8.5%

Top prescribed drugs

Triamcinolone Acetonide285 claims

Ketoconazole282 claims

Clobetasol Propionate206 claims

Betamethasone Dipropionate172 claims

Ciclopirox86 claims

QUALITY · MIPS · 2024

Final MIPS score

99.2

Quality

17.5

Cost

73.5

Improvement activities

40.0

Promoting interop.

99.0

Payment adjustment

1.02%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$3K

Payment records

167

By payment type

Food and Beverage$3K

Education$99

Top paying entities

Food and Beverage$3K

Education$99

REFERRAL NETWORK

Where Jay Zimmerman's patients come from & go

Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 2 inbound referrers · 10 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Ucsf Dermatopathology Service Clinical Laboratory · San Francisco, CA	156	242
Jonathan Posin Diagnostic Radiology · Walnut Creek, CA	11	14

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
Laboratory Corporation Of America Clinical Laboratory · San Diego, CA	161	297
JOHN MUIR HEALTH	90	134
BECKER, EDWARD	47	299
Histo-Path Technical Specialties, Inc Slide Preparation Facility · Salida, CA	41	61
JOHN MUIR HEALTH	19	26
Ucsf Dermatopathology Service Clinical Laboratory · San Francisco, CA	18	20
Jeffrey Bortz Dermatology · Walnut Creek, CA	15	22
Unilab Corporation Clinical Laboratory · Sacramento, CA	14	22
Laboratory Corporation Of America Clinical Laboratory · San Leandro, CA	13	22
David Gilbert Ophthalmology · Walnut Creek, CA	12	15

Source: CMS Physician Shared Patient Patterns (30-day window, Medicare FFS). Direction = a beneficiary seen by the first provider, then the second, within 30 days; a proxy for referral, not a documented referral. Pairs with fewer than 11 shared beneficiaries are suppressed.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history

Healthparse Signals

Monitor this provider for changes — dated NPI change events