UCSF MEDICAL GROUP BUSINESS SERVICES
NPI 1477624104
Internal Medicine in San Francisco, CA

Q: What is Ucsf Medical Group Business Services's NPI number?

The NPI number for Ucsf Medical Group Business Services is 1477624104. It was assigned to this organization in the NPPES registry on November 13, 2006.

Q: What is Ucsf Medical Group Business Services's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Active since November 13, 2006

400 PARNASSUS AVE, SAN FRANCISCO, CA 94122(415) 353-2808(415) 353-2956 Get Directions Write a Review

NPPES record last updated: August 8, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Aug 8, 2025, Jun 12, 2019 (2 updates tracked since 2019).

On this page

About Ucsf Medical Group Business Services NPPES

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

UCSF MEDICAL GROUP BUSINESS SERVICES (NPI 1477624104) is a healthcare organization registered as an internal medicine in San Francisco, California and active in the NPI registry since November 2006. The organization maintains a secondary practice location in Fremont and lists Kosal Bo, Vice President, Medical Staff Gov, as its authorized official.

NPPES Registry Identity

NPI1477624104

Entity TypeOrganization

Primary Taxonomy207R00000X

Legal Business NameUCSF MEDICAL GROUP BUSINESS SERVICES

Location Address400 PARNASSUS AVESan Francisco, CA 94122-2721

Mailing Address2001 The Embarcadero Ste 1500San Francisco, CA 94143-5200 · (415) 885-7268 · Fax (415) 885-7445

Phone(415) 353-2808

Fax(415) 353-2956

Organization SubpartYesParent: Ucsf Medical Center

Authorized OfficialKosal BoVice President, Medical Staff Gov · (415) 353-7235

Enumeration DateNovember 13, 2006

Last NPPES UpdateAugust 8, 20252 updates tracked since enumeration

NPPES CertifiedAugust 8, 2025

✔ NPI 1477624104 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 15

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in CA · 220000091

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Also ListedDermatologyTaxonomy 207N00000X · License 220000091 (CA)

Also ListedInternal Medicine · Hematology & OncologyTaxonomy 207RH0003X

Also ListedInternal Medicine · NephrologyTaxonomy 207RN0300X · License 220000091 (CA)

Also ListedInternal Medicine · Medical OncologyTaxonomy 207RX0202X · License 220000091 (CA)

Also ListedNeurological SurgeryTaxonomy 207T00000X · License 220000091 (CA)

Also ListedObstetrics & GynecologyTaxonomy 207V00000X · License 220000091 (CA)

Also ListedOphthalmologyTaxonomy 207W00000X · License 220000091 (CA)

Also ListedOrthopaedic SurgeryTaxonomy 207X00000X · License 220000091 (CA)

Also ListedOtolaryngologyTaxonomy 207Y00000X · License 220000091 (CA)

Also ListedPsychiatry & Neurology · NeurologyTaxonomy 2084N0400X · License 220000091 (CA)

Also ListedSurgeryTaxonomy 208600000X · License 220000091 (CA)

Also ListedUrologyTaxonomy 208800000X · License 220000091 (CA)

Also ListedNurse PractitionerTaxonomy 363L00000X

Also ListedNurse Practitioner · Acute CareTaxonomy 363LA2100X

400 PARNASSUS AVE, San Francisco, CA 94122

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Secondary Practice Location 1

Location 12500 Mowry Ave Ste 227Fremont, CA 94538-1605 · Phone (510) 248-1600

Other Identifiers 1

MedicaidGR0084297CA

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ucsf Medical Group Business Services is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

5,522

Medicare enrollment records show 5,522 clinicians reassign Medicare billing to Ucsf Medical Group Business Services, which bills Medicare for the services they deliver. Of these, 524 practice at this address and 3,380 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 82

Nurse Practitioner821

Pediatric Medicine586

Diagnostic Radiology355

Anesthesiology333

Internal Medicine331

Neurology283

Hospitalist234

Obstetrics/Gynecology164

74 other specialties2,415

Nearest to this location (20)

See all 5,522

Rhonald Abitona

Nurse Practitioner

NPI 1164993473

505 PARNASSUS AVE
San Francisco, CA 94143

(415) 476-1000

✔ PECOS✔ Accepts MedicareSame address

Kimiya Abtahi, DMD

Oral Surgery

NPI 1295397719

513 PARNASSUS AVE
San Francisco, CA 94143

(415) 476-8226

✔ PECOSSame address

Justin Ahn, M.D.

Urology

NPI 1063755148

400 PARNASSUS AVE # A610
San Francisco, CA 94143

(415) 885-7748

✔ PECOS✔ Accepts MedicareSame address

Mohamed Al-Amoodi, MD

Orthopedic Surgery

NPI 1326922196

400 PARNASSUS AVE STE A2300
San Francisco, CA 94143

(866) 817-7463

✔ PECOS✔ Accepts MedicareSame address

Kamal Al-Eryani, DDS, PHD

Maxillofacial Surgery

NPI 1356860290

513 PARNASSUS AVE # 722
San Francisco, CA 94143

(415) 476-2045

✔ PECOS✔ Accepts MedicareSame address

Noriko Anderson, M.D., M. P. H.

Neurology

NPI 1841617925

400 PARNASSUS AVE
San Francisco, CA 94143

(415) 353-2273

✔ PECOS✔ Accepts MedicareSame address

Shagun Arora, MD

Internal Medicine

NPI 1316198112

400 PARNASSUS AVE FL 4
San Francisco, CA 94143

(415) 353-2421

✔ PECOS✔ Accepts MedicareSame address

Su Aung, M.D.

Infectious Disease

NPI 1649513805

513 PARNASSUS AVE # 380
San Francisco, CA 94143

(401) 444-6118

✔ PECOS✔ Accepts MedicareSame address

Megan Balliet, D.P.M.

Podiatry

NPI 1063776466

400 PARNASSUS AVE # A-501
San Francisco, CA 94143

(415) 353-2357

✔ PECOS✔ Accepts MedicareSame address

Ryan Barrera, MD

Anesthesiology

NPI 1043770191

513 PARNASSUS AVE # S436
San Francisco, CA 94143

(415) 353-1297

✔ PECOSSame address

Catherine Blebea, MD

Pulmonary Disease

NPI 1134680531

513 PARNASSUS AVE
San Francisco, CA 94143

(415) 476-1000

✔ PECOS✔ Accepts MedicareSame address

Marissa Boeck, M.D.

General Surgery

NPI 1003108531

400 PARNASSUS AVE
San Francisco, CA 94143

(415) 353-2161

✔ PECOS✔ Accepts MedicareSame address

Danielle Brandman, MD, MAS

Gastroenterology

NPI 1518164540

400 PARNASSUS AVE FL 7
San Francisco, CA 94143

(415) 353-2318

✔ PECOS✔ Accepts MedicareSame address

Amarpali Brar, M.D

Nephrology

NPI 1104001718

400 PARNASSUS AVE
San Francisco, CA 94143

(415) 353-1551

✔ PECOS✔ Accepts MedicareSame address

Benjamin Braun, M.D.

Hematology/Oncology

NPI 1124124938

400 PARNASSUS AVE FL 1
San Francisco, CA 94143

(415) 353-2584

✔ PECOSSame address

Moon Kyung Choi, MD

Endocrinology

NPI 1235650953

400 PARNASSUS AVE STE A-550
San Francisco, CA 94143

(415) 353-2350

✔ PECOS✔ Accepts MedicareSame address

Timothy Chryssikos, MD

Neurosurgery

NPI 1841673332

400 PARNASSUS AVE # A303
San Francisco, CA 94143

(415) 353-2739

✔ PECOS✔ Accepts MedicareSame address

Alejandra De Alba Campomanes, MD, MPH

Ophthalmology

NPI 1003028580

400 PARNASSUS AVE
San Francisco, CA 94143

(415) 353-2560

✔ PECOS✔ Accepts MedicareSame address

Amy Fiedler, M.D.

Thoracic Surgery

NPI 1912134453

400 PARNASSUS AVE STE A501
San Francisco, CA 94143

(415) 353-1606

✔ PECOS✔ Accepts MedicareSame address

Megan Garcia-Curran, MD, PHD

Pediatric Medicine

NPI 1003443771

513 PARNASSUS AVE # S357
San Francisco, CA 94143

(415) 353-3000

✔ PECOSSame address

See all 5,522 clinicians

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

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 Ucsf Medical Group Business Services's NPI number?

The NPI number for Ucsf Medical Group Business Services is 1477624104. It was assigned to this organization in the NPPES registry on November 13, 2006.

Where is Ucsf Medical Group Business Services located?

Ucsf Medical Group Business Services is located at 400 Parnassus Ave, San Francisco, CA 94122. The listed phone number is (415) 353-2808.

What is Ucsf Medical Group Business Services's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Ucsf Medical Group Business Services enrolled in Medicare?

Yes. Ucsf Medical Group Business Services is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Ucsf Medical Group Business Services?

According to the CMS Revalidation Reassignment List (October 2026 release), 5,522 clinicians in 82 Medicare specialties reassign their Medicare billing to Ucsf Medical Group Business Services. A 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 the clinician's services. The largest specialties are Nurse Practitioner (821), Pediatric Medicine (586) and Diagnostic Radiology (355). Of these, 524 practice at this address and 3,380 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Ucsf Medical Group Business Services was last updated on August 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months 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.