Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Joseph Howard Gronich, MD

Nephrology Physician in Willow Grove, PA · enumerated 2006.

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

National Provider Identifier

1316029564

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Registry record

Entity type Individual (Type 1)

Name Joseph Howard Gronich

Credential MD

Sex Male

Practice address 735 Fitzwatertown Rd, Willow Grove, PA, 19090

Phone (215) 657-2012

Fax (215) 657-2018

Enumeration date Oct 19, 2006

Last updated in NPPES May 22, 2008

Taxonomy & licenses

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License MD047133L (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
0012921330003	Medicaid	PA	-
1031419	Other	PA	KEYSTONE MERCY
0048674000	Other	PA	IBC
110124758	Other	PA	RAILROAD MEDICARE
4288615	Other	PA	AETNA
02334MD047133L	Other	PA	HEALTH PARTNERS
231952978	Other	PA	TAX ID
0129213301	Other	PA	AMERICHOICE
0721084	Other	PA	CIGNA
096083	Other	PA	HIGHMARK

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 Joseph Gronich?

The National Provider Identifier (NPI) for Joseph Gronich is 1316029564, a Type 1 (individual) record in the CMS NPPES registry.

Where does Joseph Gronich practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-05-22.