PROVIDER PROFILE · NPI 1467559443

Dirk DiefendorfM.D.

Orthopedic SurgerySan Mateo, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

328

Unique beneficiaries

—

Total services

474

Distinct HCPCS

Medicare payment

$55K

Peer benchmark

Total Medicare services vs. 1,921 Orthopedic Surgery providers in CA — below median (cohort median 1,100).

PRESCRIBING · PART D · 2024

Total Rx claims

133

Beneficiaries

—

Total drug cost

$684

Distinct drugs

Brand share

0.0%

Top prescribed drugs

Meloxicam62 claims

Cephalexin26 claims

Diclofenac Sodium20 claims

Tramadol Hcl14 claims

Nabumetone11 claims

QUALITY · MIPS · 2024

Final MIPS score

88.9

Quality

79.9

Cost

0.0

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.59%

Individual

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

No data available for this provider in 2024.

REFERRAL NETWORK

Where Dirk Diefendorf'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). 5 inbound referrers · 18 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Avanti Ambekar Diagnostic Radiology · San Mateo, CA	27	72
Jon Keller Pathology · Palo Alto, CA	19	87
Clay Napper Diagnostic Radiology · San Mateo, CA	18	42
Gregory Lim Diagnostic Radiology · Burlingame, CA	12	34
Jeffrey Guttas Cardiology · San Mateo, CA	11	22

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
MILLS-PENINSULA HEALTH SERVICES	138	579
American Medical Response West Ambulance Service Provider · Burlingame, CA	28	59
Richard Young Family Practice · San Mateo, CA	19	64
JOHNSON, BRIAN	16	30
MARCUS, DAVID	16	47
Avanti Ambekar Diagnostic Radiology · San Mateo, CA	16	26
Lenora Fung Diagnostic Radiology · Burlingame, CA	16	45
Michael Lai Diagnostic Radiology · Daly City, CA	15	42
Arthur Li Diagnostic Radiology · Burlingame, CA	15	33
Jon Keller Pathology · Palo Alto, CA	15	37
Waverley Surgery Center Llc Ambulatory Surgical Center · Palo Alto, CA	14	50
NPI 1003853490	12	33

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