MR. ROBERT ALAN HARF MD FACS
NPI 1023128741
Orthopaedic Surgery - Orthopaedic Surgery of the Spine in Sonoma, CA

Q: What is Robert Harf's NPI number?

The NPI number for Robert Harf is 1023128741. It was assigned to this individual provider in the NPPES registry on August 30, 2006.

Q: What is Robert Harf's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery, specializing in Orthopaedic Surgery of the Spine, with taxonomy code 207XS0117X.

Q: When was this NPI record last updated?

The NPPES record for Robert Harf was last updated on February 10, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since August 30, 2006PECOS EnrolledAccepts Medicare Assignment

0/100

CMS Quality Rating

181 ANDRIEUX ST STE 111, SONOMA, CA 95476(707) 996-8017(707) 996-8061 Get Directions Write a Review

NPPES record last updated: February 10, 2017. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Mr. Robert Alan Harf Md Facs NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MR. ROBERT ALAN HARF MD FACS (NPI 1023128741) is an individual orthopaedic surgery of the spine provider in Sonoma, California, licensed in California (A406260) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1977).

NPPES Registry Identity

NPI1023128741

Entity TypeIndividualMale

Primary Taxonomy207XS0117X

Provider Legal NameMR. ROBERT ALAN HARFCredential: MD FACS

Location Address181 ANDRIEUX ST STE 111Sonoma, CA 95476-6920

Mailing AddressPo Box 1722, 181 Andrieux St Ste 111Sonoma, CA 95476-6920 · (707) 996-8017 · Fax (707) 996-8061

Phone(707) 996-8017

Fax(707) 996-8061

Sole ProprietorYes

Medical School CMSOtherGraduated 1977

Enumeration DateAugust 30, 2006

Last NPPES UpdateFebruary 10, 2017

✔ NPI 1023128741 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyOrthopaedic Surgery · Orthopaedic Surgery of the SpineAllopathic & Osteopathic Physicians

Taxonomy Code207XS0117X

License✔ Licensed in CA · A406260

Definition

Recognized by several state medical boards as a fellowship subspecialty program of orthopaedic surgery, orthopaedic surgeons of the spine deal with the evaluation and nonoperative and operative treatment of the full spectrum of primary spinal disorders including trauma, degenerative, deformity, tumor, and reconstructive.

Also ListedOrthopaedic SurgeryTaxonomy 207X00000X · License A40626 (CA)

181 ANDRIEUX ST STE 111, Sonoma, CA 95476

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Other Identifiers 4

OtherP00003535Rail Road Medicare

Medicaid00A406260CA

Medicare UPINA29164

Medicare ID-Type Unspecified00A406260

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mr. Robert Alan Harf Md Facs is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6800075870

PECOS Enrollment IDI20110121001039

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Robert Harf reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Robert Harf Orthopaedics A Professional Corporation

Same address

Orthopaedic Surgery of the Spine

181 ANDRIEUX ST, SUITE 111
Sonoma, CA 95476

Reassigned Medicare billing, California enrollment

NPI 1639474356 (707) 996-8017

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 12

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

310 services145 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

87 services87 patients

Aspiration and/or injection of fluid from large joint 20610

This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.

37 services27 patients

X-ray of lower and sacral spine, 2-3 views 72100

An X-ray of the lower and sacral spine involves capturing images of your lower back area, including the tailbone. This procedure helps in identifying problems like fractures, infections, or deformities. 2-3 different angle views provide a comprehensive picture.

34 services34 patients

X-ray of hip, 2-3 views 73502

An X-ray of the hip with 2-3 views is a non-invasive imaging test. It uses a small amount of radiation to produce pictures of the hip joint. These images help in diagnosing conditions like fractures, arthritis, or other abnormalities. The process is quick and painless.

29 services27 patients

Mri scan of lower spinal canal without contrast 72148

An MRI scan of the lower spinal canal without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to produce detailed images of your lower spine. This helps identify issues like disc problems, tumors, or nerve conditions. No dye is used.

20 services19 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

18 services18 patients

X-ray of shoulder, minimum of 2 views 73030

An X-ray of the shoulder, with a minimum of 2 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of your shoulder bones. This helps in diagnosing conditions like fractures, arthritis, or other abnormalities. The procedure is quick and painless.

17 services12 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

17 services14 patients

X-ray of knee, 1-2 views 73560

An X-ray of the knee with 1-2 views is a quick, painless test that produces images of the knee bones. It helps identify fractures, infections, or changes in the knee joint. During the procedure, you'll be asked to stay still while the X-ray machine captures the images.

14 services13 patients

Injection, methylprednisolone acetate, 20 mg J1020

Methylprednisolone acetate is a medication given via injection to reduce inflammation and pain. It's often used to treat conditions like arthritis, allergic reactions, and certain skin diseases. The 20 mg dose is tailored to your specific needs.

12 services11 patients

Treatment of broken neck of thigh bone with bone implant 27245

This procedure involves repairing a fractured thigh bone by inserting a bone implant. The implant helps stabilize the bone, allowing it to heal correctly. It's performed under anesthesia and requires a hospital stay for recovery.

11 services11 patients

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

0/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Individually scored

Quality

Improvement Activities

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Robert Harf's NPI number?

The NPI number for Robert Harf is 1023128741. It was assigned to this individual provider in the NPPES registry on August 30, 2006.

Where is Robert Harf located?

Robert Harf practices at 181 Andrieux St Ste 111, Sonoma, CA 95476. The listed phone number is (707) 996-8017.

What is Robert Harf's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery, specializing in Orthopaedic Surgery of the Spine, with taxonomy code 207XS0117X.

Is Robert Harf enrolled in Medicare?

Yes. Robert Harf is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Robert Harf's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Robert Harf reassigns Medicare benefits to Robert Harf Orthopaedics A Professional Corporation (Sonoma, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Robert Harf's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Robert Harf was last updated on February 10, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.