Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Cheryl Anne Johnstone, M.D.

Internal Medicine Physician in St Petersburg, FL · enumerated 2006.

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

National Provider Identifier

1629097530

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Registry record

Entity type Individual (Type 1)

Name Dr. Cheryl Anne Johnstone

Credential M.D.

Sex Female

Practice address 2552 1st Ave N, St Petersburg, FL, 33713

Phone (727) 516-7272

Fax (833) 941-2649

Enumeration date Jul 19, 2006

Last updated in NPPES Apr 15, 2026

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License ME178099 (FL) Primary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 4301068380 (MI) 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
130912	Other	MI	PREFERRED CHOICES
OH24993	Other	MI	BLUE CROSS AND BLUE SHIELD OF MICHIGAN
CB2510	Other	MI	RAILROAD MEDICARE

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

What specialty is Cheryl Johnstone?

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

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-04-15.