What is Michael Drinnan's specialty?

Michael Drinnan (NPI 1609883024) is a Medicare-billing provider whose primary specialty is Ophthalmology in San Mateo, CA.

Where does Michael Drinnan practice?

Michael Drinnan practices in San Mateo, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1609883024.

How much does Medicare pay Michael Drinnan?

Michael Drinnan (NPI 1609883024) received approximately $133K in total Medicare Part B payments, serving 411 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1609883024

Michael DrinnanMD

OphthalmologySan Mateo, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,023

Unique beneficiaries

—

Total services

1,107

Distinct HCPCS

Medicare payment

$131K

Peer benchmark

Total Medicare services vs. 2,144 Ophthalmology providers in CA — below median (cohort median 1,859).

PRESCRIBING · PART D · 2024

Total Rx claims

246

Beneficiaries

—

Total drug cost

$6K

Distinct drugs

Brand share

11.4%

Top prescribed drugs

Latanoprost149 claims

Timolol Maleate55 claims

Dorzolamide Hcl/Timolol Maleat15 claims

Prednisolone Acetate14 claims

Brimonidine Tartrate/Timolol13 claims

QUALITY · MIPS · 2024

Final MIPS score

84.9

Quality

88.7

Cost

66.1

Improvement activities

40.0

Promoting interop.

94.0

Payment adjustment

0.42%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$76

Payment records

By payment type

Food and Beverage$76

Top paying entities

Food and Beverage$76

REFERRAL NETWORK

Where Michael Drinnan'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). 12 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Jon Keller Pathology · Palo Alto, CA	34	152
Jeffrey Guttas Cardiology · San Mateo, CA	26	79
SARVER, BEVERLY	23	39
Alireza Ghamgosar Podiatry · San Mateo, CA	22	39
Dale Ritzo Internal Medicine · San Mateo, CA	22	69
Harriet Borofsky Diagnostic Radiology · San Mateo, CA	20	26
WEBB, PETER	19	48
John Chow Internal Medicine · San Mateo, CA	17	48
Robert Meints Anesthesiology · Burlingame, CA	12	31
Timothy Offensend Internal Medicine · San Mateo, CA	12	53
NPI 1144281106	12	24
John Connolly Urology · Burlingame, CA	11	17

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