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PROVIDER PROFILE · NPI 1093887721

Tammy ChenMD

PRACTICEASIAN HEALTH SERVICESSee all providers at this practice →
Family PracticeOakland, CAI
CROSS-REFERENCE

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ProviderScore
OIG/SAM exclusion screening, sanctions history
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FACILITY AFFILIATIONS

Hospital & Facility Affiliations (3)

CCN 557747
Home health agency
CCN 050043
Hospital
CCN 050488
Hospital
MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
60
Unique beneficiaries
—
Total services
61
Distinct HCPCS
1
Medicare payment
$571
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 8,228 Family Practice providers in CA — bottom quintile (cohort median 411).
PRESCRIBING · PART D · 2024
Total Rx claims
1,468
Beneficiaries
—
Total drug cost
$59K
Distinct drugs
39
Brand share
12.3%
Top prescribed drugs
Amlodipine Besylate117 claims
Famotidine109 claims
Atorvastatin Calcium109 claims
Baclofen97 claims
Albuterol Sulfate86 claims
QUALITY · MIPS · 2024
No data available for this provider in 2024.
REFERRAL NETWORK

Where Tammy Chen'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 · 20 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
ASIAN HEALTH SERVICES225426
Bradford Piatt
Diagnostic Radiology · Lafayette, CA
3041
Peter Sam
Family Practice · Oakland, CA
2845
Evelyn Loo
Internal Medicine · Richmond, CA
1824
SUTTER EAST BAY HOSPITALS1833
ASIAN NETWORK PHYSICAL THERAPY AND REHABILITATION1720
Susan Lo
Family Practice · Oakland, CA
1634
Lisa Mae Yee
Family Practice · Oakland, CA
1628
Kathryn Klima
Diagnostic Radiology · Oakland, CA
1521
RICH, PHILIP1320
Gina Nguyen-Magdael
Nurse Practitioner · Manteca, CA
1321
Jie Ling
Internal Medicine · Millbrae, CA
1114
Refers patients to
Outbound — where patients go next
PhysicianPatientsVisits
ASIAN HEALTH SERVICES268655
Unilab Corporation
Clinical Laboratory · Sacramento, CA
129285
SUTTER EAST BAY HOSPITALS67121
Bradford Piatt
Diagnostic Radiology · Lafayette, CA
6280
ASIAN HEALTH SERVICES5791
Unilab Corporation
Clinical Laboratory · San Jose, CA
4691
Clayton Chan
Internal Medicine · Oakland, CA
2652
Peter Sam
Family Practice · Oakland, CA
2337
Daveena Ma
Internal Medicine · Oakland, CA
2246
Susan Lo
Family Practice · Oakland, CA
1832
ASIAN NETWORK PHYSICAL THERAPY AND REHABILITATION1618
RICH, PHILIP1522
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.
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
No data available for this provider in 2024.