Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John A. Billon, MD

Family Medicine Physician in Arnold, MD · enumerated 2006 · practices at Maryland Primary Care Physicians, LLC.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1083714653

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Registry record

Entity type Individual (Type 1)

Name Dr. John A. Billon

Credential MD

Sex Male

Practice address 1509 Ritchie Hwy, Arnold, MD, 21012

Phone (410) 757-7600

Fax (410) 626-8043

Enumeration date Sep 24, 2006

Last updated in NPPES Nov 10, 2016

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License D65013 (MD) Primary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License C1-0008021 (DE) Secondary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License MA71829 (NJ) Secondary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 229714-1 (NY) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
334815600	Medicaid	MD	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is John Billon?

John Billon is registered in NPPES with the primary taxonomy of Family Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Mary Ann Gardiner Family Nurse Practitioner · Arnold, MD NPI 1164423455 Shannon West Pediatrics Physician · Arnold, MD NPI 1982606794 Kathleen Ogle Family Nurse Practitioner · Arnold, MD NPI 1912909318 Jennifer Rocca-Sexton Physician Assistant · Arnold, MD NPI 1336131200 Victor Plavner Family Medicine Physician · Arnold, MD NPI 1104818004 Izabela Plucinska Family Nurse Practitioner · Arnold, MD NPI 1720070626 Rachel Sweeney Family Nurse Practitioner · Arnold, MD NPI 1265424055 Sonya Williams Family Nurse Practitioner · Arnold, MD NPI 1912999517

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-11-10.