What is Gregory Hadfield's specialty?

Gregory Hadfield (NPI 1285869966) is a Medicare-billing provider whose primary specialty is Physician Assistant in Lakeport, CA.

Where does Gregory Hadfield practice?

Gregory Hadfield practices in Lakeport, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1285869966.

How much does Medicare pay Gregory Hadfield?

Gregory Hadfield (NPI 1285869966) received approximately $638K in total Medicare Part B payments, serving 1,060 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1285869966

Gregory HadfieldPA-C

PRACTICELAKE DERMATOLOGY MEDICAL ASSOC INCSee all providers at this practice →

Physician AssistantLakeport, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

5,299

Unique beneficiaries

—

Total services

17,108

Distinct HCPCS

Medicare payment

$483K

Peer benchmark

Total Medicare services vs. 7,073 Physician Assistant providers in CA — top quintile (cohort median 224).

PRESCRIBING · PART D · 2024

Total Rx claims

2,076

Beneficiaries

—

Total drug cost

$674K

Distinct drugs

Brand share

9.2%

Top prescribed drugs

Ketoconazole394 claims

Mupirocin327 claims

Triamcinolone Acetonide289 claims

Clobetasol Propionate106 claims

Cephalexin101 claims

QUALITY · MIPS · 2024

Final MIPS score

84.8

Quality

96.3

Cost

54.4

Improvement activities

40.0

Promoting interop.

0.0

Payment adjustment

0.41%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$183

Payment records

By payment type

Food and Beverage$183

Top paying entities

Food and Beverage$183

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (1)

CCN 051317

Hospital

REFERRAL NETWORK

Where Gregory Hadfield'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 · 5 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
ADVENTIST HEALTH CLEARLAKE HOSPITAL INC.	19	36
ADVENTIST HEALTH CLEARLAKE HOSPITAL INC.	15	76

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
Jeffrey Sugarman Dermatology · Santa Rosa, CA	32	48
KAHN, JAMES	23	61
ADVENTIST HEALTH CLEARLAKE HOSPITAL INC.	18	55
ADVENTIST HEALTH CLEARLAKE HOSPITAL INC.	17	62
SUTTER BAY HOSPITALS	16	22

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