What is John Timmerman's specialty?

John Timmerman (NPI 1891715090) is a Medicare-billing provider whose primary specialty is Hematology-Oncology in Los Angeles, CA.

Where does John Timmerman practice?

John Timmerman practices in Los Angeles, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1891715090.

How much does Medicare pay John Timmerman?

John Timmerman (NPI 1891715090) received approximately $240K in total Medicare Part B payments, serving 156 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1891715090

John TimmermanMD

Hematology-OncologyLos Angeles, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

269

Unique beneficiaries

—

Total services

624

Distinct HCPCS

Medicare payment

$49K

Peer benchmark

Total Medicare services vs. 957 Hematology-Oncology providers in CA — above median (cohort median 4,173).

PRESCRIBING · PART D · 2024

Total Rx claims

Beneficiaries

—

Total drug cost

$288K

Distinct drugs

Brand share

100.0%

Top prescribed drugs

Zanubrutinib19 claims

QUALITY · MIPS · 2024

Final MIPS score

87.5

Quality

79.4

Cost

73.7

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.53%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$83

Payment records

By payment type

Food and Beverage$83

Top paying entities

Food and Beverage$83

REFERRAL NETWORK

Where John Timmerman'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). 6 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
REGENTS OF THE UNIV OF CALIFORNIA	23	329
John Chute Hematology-Oncology · West Hollywood, CA	15	321
Donald Roback Diagnostic Radiology · Manhattan Beach, CA	15	83
Benjamin Plotkin Diagnostic Radiology · Los Angeles, CA	12	87
Sophie Song Pathology · Los Angeles, CA	11	82
Sheeja Pullarkat Pathology · Los Angeles, CA	11	128

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