What is David Tonnemacher's specialty?

David Tonnemacher (NPI 1972595528) is a Medicare-billing provider whose primary specialty is Cardiology in Glendale, CA.

Where does David Tonnemacher practice?

David Tonnemacher practices in Glendale, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1972595528.

How much does Medicare pay David Tonnemacher?

David Tonnemacher (NPI 1972595528) received approximately $90K in total Medicare Part B payments, serving 161 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1972595528

David TonnemacherM.D.

CardiologyGlendale, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

448

Unique beneficiaries

—

Total services

1,267

Distinct HCPCS

Medicare payment

$85K

Peer benchmark

Total Medicare services vs. 1,869 Cardiology providers in CA — below median (cohort median 2,371).

PRESCRIBING · PART D · 2024

Total Rx claims

2,286

Beneficiaries

—

Total drug cost

$163K

Distinct drugs

Brand share

14.4%

Top prescribed drugs

Atorvastatin Calcium222 claims

Losartan Potassium209 claims

Rosuvastatin Calcium138 claims

Levothyroxine Sodium123 claims

Metoprolol Succinate118 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$227

Payment records

By payment type

Food and Beverage$227

Top paying entities

Food and Beverage$227

REFERRAL NETWORK

Where David Tonnemacher'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). 10 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
21st Century Diagnostic Laboratory, Inc. Clinical Laboratory · Burbank, CA	239	1,358
DIGNITY COMMUNITY CARE	65	191
Unilab Corporation Clinical Laboratory · West Hills, CA	30	81
JOE, STANTON	29	51
USC VERDUGO HILLS HOSPITAL, LLC	20	61
WONG, STEVEN	15	23
Justine Park Dermatology · Glendale, CA	14	28
Bruce Bagheri Cardiology · Glendale, CA	13	74
BROWN, STEVEN	13	22
PROVIDENCE HEALTH SYSTEM - SOUTHERN CALIFORNIA	11	24

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