Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Spencer Joel Markowitz, M.D.

Internal Medicine Physician in Crown Point, IN · enumerated 2007 · practices at Aceso Visiting Physicians and Geriatric Care Inc..

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

National Provider Identifier

1265576524

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Registry record

Entity type Individual (Type 1)

Name Dr. Spencer Joel Markowitz

Credential M.D.

Sex Male

Practice address 300 N Main St Ste D, Crown Point, IN, 46307

Phone (219) 663-4888

Fax (219) 663-4877

Enumeration date Feb 19, 2007

Last updated in NPPES Jul 4, 2021

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 01046970A (IN) 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
200149720	Medicaid	IN	-
IN2007007	Other	IN	MEDICARE PTAN

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 Spencer Markowitz?

Spencer Markowitz 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 2021-07-04.