What is Michael Hamman's specialty?

Michael Hamman (NPI 1538346911) is a Medicare-billing provider whose primary specialty is Dermatology in San Diego, CA.

Where does Michael Hamman practice?

Michael Hamman practices in San Diego, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1538346911.

How much does Medicare pay Michael Hamman?

Michael Hamman (NPI 1538346911) received approximately $409K in total Medicare Part B payments, serving 374 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1538346911

Michael HammanMD

DermatologySan Diego, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

912

Unique beneficiaries

—

Total services

1,098

Distinct HCPCS

Medicare payment

$362K

Peer benchmark

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

PRESCRIBING · PART D · 2024

Total Rx claims

325

Beneficiaries

—

Total drug cost

$4K

Distinct drugs

Brand share

16.9%

Top prescribed drugs

Doxycycline Hyclate215 claims

Hydrocodone/Acetaminophen36 claims

Cephalexin21 claims

Imiquimod20 claims

Sulfamethoxazole/Trimethoprim19 claims

QUALITY · MIPS · 2024

Final MIPS score

85.2

Quality

74.5

Cost

82.7

Improvement activities

40.0

Promoting interop.

92.0

Payment adjustment

0.43%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$1K

Payment records

By payment type

Food and Beverage$1K

Top paying entities

Food and Beverage$1K

REFERRAL NETWORK

Where Michael Hamman'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). 7 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Antoanella Calame Dermatology · San Diego, CA	241	490
Brook Brouha Dermatology · La Jolla, CA	112	233
YUMA REGIONAL MEDICAL CENTER	72	163
Patrick Aiello Ophthalmology · Yuma, AZ	15	27
REGENTS OF THE UNIVERSITY OF CALIFORNIA	12	34
WONG, DOROTHY	11	27
Scripps Health Clinical Laboratory · La Jolla, CA	11	33

Refers patients to

Outbound — where patients go next

No outbound pairs above the suppression threshold.

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