Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Robert H. Mayernik, M.D.

Gynecology Physician in Frederick, MD · enumerated 2005.

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

National Provider Identifier

1942290127

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Registry record

Entity type Individual (Type 1)

Name Dr. Robert H. Mayernik

Credential M.D.

Sex Male

Practice address 174 Thomas Johnson Dr, Suite 204, Frederick, MD, 21702

Phone (301) 662-2300

Fax (301) 662-7364

Enumeration date Oct 27, 2005

Last updated in NPPES Jul 9, 2007

Taxonomy & licenses

207VG0400X Gynecology Physician Allopathic & Osteopathic Physicians · License D0026401 (MD) Primary

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

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 NPI 1942290127 active?

Yes, as of the latest NPPES snapshot, NPI 1942290127 is active (record last updated 2007-07-09).

How do I verify Robert Mayernik's NPI record?

Cross-check NPI 1942290127 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.