Doctor profile · Federal record

Dr. Robert Harf, MD FACS

Orthopaedic Surgery of the Spine Physician (CMS: Orthopedic Surgery) · Orthopaedic Surgery Physician · Sonoma, CA

  • NPI 1023128741
  • Accepts Medicare
  • MIPS 0.0 / 100 · 2023
  • 49 yrs in practice
  • Male
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
181 Andrieux St Ste 111
Sonoma, CA 954766920
(707) 996-8017
fax (707) 996-8061
Mailing address
Po Box 1722, 181 Andrieux St Ste 111
Sonoma, CA 954766920

Credentials & registration

NPPES · NUCC
NPI registered
August 2006 — 20 yrs on file
Profile last updated
February 10, 2017
Year of graduation
1977 — 49 yrs since
Specialty taxonomy
207XS0117X — NUCC code
State licenses (2)
California #A406260 · California #A40626
Medicaid
CA #00A406260

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1023128741. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
590
Distinct HCPCS
10
Medicare allowed
$50,134
HCPCS Description Services Patients Avg allowed
99213 Established patient office or other outpatient visit, 20-29 minutes 307 143 $98
99203 New patient office or other outpatient visit, 30-44 minutes 72 72 $121
J1020 Injection, methylprednisolone acetate, 20 mg 41 31 $5
72100 X-ray of lower and sacral spine, 2-3 views 36 35 $11
20610 Aspiration and/or injection of fluid from large joint 35 26 $71
72148 Mri scan of lower spinal canal without contrast 25 25 $74
99214 Established patient office or other outpatient visit, 30-39 minutes 23 20 $139
73502 X-ray of hip, 2-3 views 16 14 $11
73560 X-ray of knee, 1-2 views 13 12 $10
73721 Mri scan of leg joint without contrast 11 11 $68

In context: peer comparison

Among 1 peers in this city , average services per provider: 53. This provider delivers 11× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$2,193
Transactions
20
Manufacturers
5
Payer (manufacturer) Industry Txns Amount
Zimmer Biomet Holdings, Inc. 14 $1,866.15
Stryker Corporation 2 $179.99
DePuy Synthes Sales Inc. 1 $80.69
Cerapedics Inc. 2 $41.58
Boston Scientific Corporation 1 $24.41

By nature of payment

Travel and Lodging
$1,545
Food and Beverage
$647

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
101
Patients
64
Total drug cost
$1,170
Drug Type Claims Patients Total cost
Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) Brand 35 26 $311
Ibuprofen Generic 24 15 $141
Gabapentin Generic 16 0 $394
Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) Brand 15 12 $147
Methylprednisolone Generic 11 11 $177

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Robert Harf's medical specialty?
Dr. Robert Harf practices Orthopaedic Surgery of the Spine Physician in Sonoma, CA.
Where does Dr. Robert Harf practice?
Dr. Robert Harf practices at 181 Andrieux St Ste 111, Sonoma, CA 954766920. Office phone: 7079968017.
What is Dr. Robert Harf's NPI?
Dr. Robert Harf's National Provider Identifier (NPI) is 1023128741, issued by NPPES.
Does Dr. Robert Harf accept Medicare assignment?
Yes. Dr. Robert Harf accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Robert Harf commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); New patient office or other outpatient visit (HCPCS 99203); Injection, methylprednisolone acetate, 20 mg (HCPCS J1020). Source: CMS Medicare Physician & Other Practitioners file.