What is Alexander Grinberg's specialty?

Alexander Grinberg (NPI 1538260765) is a Medicare-billing provider whose primary specialty is Psychiatry in San Francisco, CA.

Where does Alexander Grinberg practice?

Alexander Grinberg practices in San Francisco, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1538260765.

How much does Medicare pay Alexander Grinberg?

Alexander Grinberg (NPI 1538260765) received approximately $2K in total Medicare Part B payments, serving 21 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1538260765

Alexander GrinbergM.D.

PsychiatrySan Francisco, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

Unique beneficiaries

—

Total services

Distinct HCPCS

Medicare payment

$2K

Peer benchmark

Total Medicare services vs. 2,213 Psychiatry providers in CA — bottom quintile (cohort median 203).

PRESCRIBING · PART D · 2024

Total Rx claims

2,867

Beneficiaries

—

Total drug cost

$99K

Distinct drugs

Brand share

11.6%

Top prescribed drugs

Quetiapine Fumarate259 claims

Memantine Hcl209 claims

Risperidone198 claims

Mirtazapine186 claims

Sertraline Hcl183 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Alexander Grinberg'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
NPI 1447682380	42	57
Inessa Svidler General Practice · San Francisco, CA	24	46
Karina Arzumanova Internal Medicine · San Francisco, CA	20	38
Tatyana Chursina Physician Assistant · Sacramento, CA	18	23
NPI 1174600480	13	16
HUIE, MICHAEL	12	13
LIEF, LAURENCE	11	15

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