Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Dennis Michael Grolman, M.D.

Pain Medicine (Anesthesiology) Physician in York, PA · enumerated 2005.

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

National Provider Identifier

1942209564

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Dennis Michael Grolman

Credential M.D.

Sex Male

Practice address 1855 Powder Mill Rd, York, PA, 17402

Phone (717) 848-4800

Fax (717) 741-9539

Enumeration date Jul 15, 2005

Last updated in NPPES Feb 9, 2009

Taxonomy & licenses

207LP2900X Pain Medicine (Anesthesiology) Physician Allopathic & Osteopathic Physicians · License MD018355E (PA) Primary

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
000710702004	Medicaid	PA	-

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 is the NPI number for Dennis Grolman?

The National Provider Identifier (NPI) for Dennis Grolman is 1942209564, a Type 1 (individual) record in the CMS NPPES registry.

Where does Dennis Grolman practice?

The practice location on file with NPPES is in York, PA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Douglas Hofmann Orthopaedic Surgery Physician · York, PA NPI 1255336566 Vincent Butera Orthopaedic Surgery Physician · York, PA NPI 1588669709 Kirk Pandelidis Orthopaedic Surgery Physician · York, PA NPI 1942205893 David Cohen Orthopaedic Surgery Physician · York, PA NPI 1467457317 Suzette Song Orthopaedic Surgery Physician · York, PA NPI 1396742409 Gracia Etienne Adult Reconstructive Orthopaedic Surgery Physician · York, PA NPI 1669479788 Steven Triantafyllou Orthopaedic Surgery Physician · York, PA NPI 1831197730 Michael Furman Interventional Pain Medicine Physician · York, PA NPI 1184623795

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-02-09.