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WILLIAM CARL PETERSEN JR. M.D.
NPI 1801933197
Pediatrics - Pediatric Hematology-Oncology in Charlottesville, VA

Active since January 30, 2007PECOS Enrolled
1204 W MAIN ST, CHARLOTTESVILLE, VA 22903(434) 924-0123(434) 243-3300 Get Directions Write a Review

NPPES record last updated: August 9, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 9, 2023, Oct 13, 2020, Aug 28, 2019 (3 updates tracked since 2019).

About William Carl Petersen Jr. M.d. NPPES

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

WILLIAM CARL PETERSEN JR. M.D. (NPI 1801933197) is an individual pediatric hematology-oncology provider in Charlottesville, Virginia, licensed in Virginia (0101254189) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS and maintains a secondary practice location in Charlottesville.

NPPES Registry Identity

NPI1801933197
Entity TypeIndividualMale
Primary Taxonomy2080P0207X
Provider Legal NameWILLIAM CARL PETERSEN JR.Credential: M.D.
Location Address1204 W MAIN STCharlottesville, VA 22903-2824
Mailing AddressPo Box 9007Charlottesville, VA 22906-9007
Phone(434) 924-0123
Fax(434) 243-3300
Sole ProprietorNo
Enumeration DateJanuary 30, 2007
Last NPPES UpdateAugust 9, 20233 updates tracked since enumeration
NPPES CertifiedAugust 9, 2023
✔ NPI 1801933197 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Pediatric Hematology-OncologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0207X
License✔ Licensed in VA · 0101254189
Definition
A pediatrician trained in the combination of pediatrics, hematology and oncology to recognize and manage pediatric blood disorders and cancerous diseases.
1204 W MAIN ST, Charlottesville, VA 22903
Open in Google Maps ↗

Secondary Practice Location 1

Location 11215 Lee StCharlottesville, VA 22908-2824 · Phone (434) 924-0211

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

William Carl Petersen Jr. M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 William Petersen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

University Of Virginia Physicians Group
1.1 mi
Neuromusculoskeletal Medicine, Sports Medicine
4105 LEWIS AND CLARK DR
Charlottesville, VA 22911
  • Reassigned Medicare billing, Virginia enrollment
  • 2,820 clinicians in this Medicare group
NPI 1033138250 (434) 295-1000

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

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

HEATHER STEVENS SPADER MD
Neurological Surgery
1204 W MAIN ST
CHARLOTTESVILLE, VA 22903
Charlottesville City (434) 243-5749
DR. ASMA SHAHID HABIB M.D.
Pediatrics (Pediatric Cardiology)
1204 W MAIN ST
CHARLOTTESVILLE, VA 22903
Charlottesville City (434) 924-9119
JENNIFER MOORE ANDREWS D.O.
Pediatrics
1204 W MAIN ST
CHARLOTTESVILLE, VA 22903
Charlottesville City (434) 924-0123
WILLIAM G. WILSON M.D.
Medical Genetics (Clinical Genetics (M.D.))
1204 W MAIN ST
CHARLOTTESVILLE, VA 22903
Charlottesville City (434) 924-0123
CHRISTIAN A. CHISHOLM MD
Obstetrics & Gynecology
1204 W MAIN ST
CHARLOTTESVILLE, VA 22903
Charlottesville City (434) 924-2500
LINDA A. WAGGONER FOUNTAIN MD
Pediatrics (Pediatric Infectious Diseases)
1204 W MAIN ST
CHARLOTTESVILLE, VA 22903
Charlottesville City (434) 924-0123
ANNE C BUTZ LCSW
Social Worker (Clinical)
1204 W MAIN ST
CHARLOTTESVILLE, VA 22903
Charlottesville City (434) 924-5321
KEITH R. BACHMANN M.D.
Orthopaedic Surgery (Pediatric Orthopaedic Surgery)
1204 W MAIN ST
CHARLOTTESVILLE, VA 22903
Charlottesville City (434) 924-2301

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 William Petersen's NPI number?

The NPI number for William Petersen is 1801933197. It was assigned to this individual provider in the NPPES registry on January 30, 2007.

Where is William Petersen located?

William Petersen practices at 1204 W Main St, Charlottesville, VA 22903. The listed phone number is (434) 924-0123.

What is William Petersen's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Hematology-Oncology, with taxonomy code 2080P0207X.

Is William Petersen enrolled in Medicare?

Yes. William Petersen is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for William Petersen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Petersen reassigns Medicare benefits to University Of Virginia Physicians Group (Charlottesville, VA). 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 William Petersen'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 William Petersen was last updated on August 9, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.