Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Daniel J Diekema, MD

Infectious Disease Physician in South Portland, ME · enumerated 2005.

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

National Provider Identifier

1104801489

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Registry record

Entity type Individual (Type 1)

Name Dr. Daniel J Diekema

Credential MD

Sex Male

Practice address 41 Donald B Dean Dr, South Portland, ME, 04106

Phone (207) 661-7901

Enumeration date Dec 9, 2005

Last updated in NPPES Sep 12, 2022

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 28731 (IA) Secondary

207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License 28731 (IA) Secondary

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License 28731 (IA) Secondary

207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License MD14027 (ME) 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
47989	Other	IA	WELLMARK BCBS
0098376	Medicaid	IA	-

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

Where does Daniel Diekema practice?

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

What is the NPI number for Daniel Diekema?

The National Provider Identifier (NPI) for Daniel Diekema is 1104801489, a Type 1 (individual) record in the CMS NPPES registry.

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Elizabeth Colton Clinical Social Worker · South Portland, ME NPI 1689730574 Melissa Page Obesity and Weight Management Nutrition Registered Dietitian · South Portland, ME NPI 1518217132 Jennifer Hanic Clinical Social Worker · S Portland, ME NPI 1588223556 Kelly Whitaker Registered Dietitian · South Portland, ME NPI 1043848039 Kathryn Cutting Registered Dietitian · South Portland, ME NPI 1487255675

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-09-12.