What is David Portier's specialty?

David Portier (NPI 1417118639) is a Medicare-billing provider whose primary specialty is Internal Medicine in Daly City, CA.

Where does David Portier practice?

David Portier practices in Daly City, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1417118639.

How much does Medicare pay David Portier?

David Portier (NPI 1417118639) received approximately $3.9M in total Medicare Part B payments, serving 4,054 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1417118639

David PortierMD

Internal MedicineDaly City, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

19,514

Unique beneficiaries

—

Total services

76,626

Distinct HCPCS

Medicare payment

$3.9M

Peer benchmark

Total Medicare services vs. 10,499 Internal Medicine providers in CA — top quintile (cohort median 531).

PRESCRIBING · PART D · 2024

Total Rx claims

21,916

Beneficiaries

—

Total drug cost

$993K

Distinct drugs

184

Brand share

16.9%

Top prescribed drugs

Atorvastatin Calcium2,094 claims

Amlodipine Besylate1,389 claims

Tamsulosin Hcl867 claims

Gabapentin727 claims

Apixaban649 claims

QUALITY · MIPS · 2024

Final MIPS score

89.3

Quality

90.0

Cost

44.4

Improvement activities

40.0

Promoting interop.

0.0

Payment adjustment

0.60%

Individual

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where David Portier'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). 34 inbound referrers · 42 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
UCSF HEALTH COMMUNITY HOSPITALS	123	381
City & County Of San Francisco Ambulance Service Provider · San Francisco, CA	59	152
KINDRED NURSING CENTERS WEST, LLC	49	134
David Priest Diagnostic Radiology · San Francisco, CA	44	155
Stephanie Seiki Internal Medicine · San Francisco, CA	42	109
Daniel Lentz Diagnostic Radiology · San Francisco, CA	40	168
Hui Yang Internal Medicine · Daly City, CA	40	309
Matthew Jeong Hospitalist · San Francisco, CA	38	418
Luke Scalcione Diagnostic Radiology · San Diego, CA	34	89
KINDRED NURSING CENTERS WEST, LLC	29	61
Jessica Tan Diagnostic Radiology · San Francisco, CA	29	79
American Medical Response West Ambulance Service Provider · San Francisco, CA	28	66

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
UCSF HEALTH COMMUNITY HOSPITALS	44	158
KINDRED NURSING CENTERS WEST, LLC	36	110
Matthew Jeong Hospitalist · San Francisco, CA	35	419
ANGOTTI HEALTHCARE SYSTEMS INC	33	97
Jessica Tan Diagnostic Radiology · San Francisco, CA	32	72
Natalia Bruchanski-Gallagher Internal Medicine · South San Francisco, CA	31	339
Michael Taylor Diagnostic Radiology · San Francisco, CA	30	91
Luke Scalcione Diagnostic Radiology · San Diego, CA	29	64
Constance Wong Internal Medicine · Daly City, CA	29	212
ENDERBY, SCOTT	28	74
RAYBIN, DANIEL	26	98
David Priest Diagnostic Radiology · San Francisco, CA	25	73

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