Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Konrad W Bakker, M.D.

Sleep Medicine (Psychiatry & Neurology) Physician in Frederick, MD · enumerated 2005.

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

National Provider Identifier

1346246782

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Registry record

Entity type Individual (Type 1)

Name Dr. Konrad W Bakker

Credential M.D.

Sex Male

Practice address Frederick, MD, 21702

Phone (301) 694-0900

Fax (301) 694-0657

Enumeration date Jun 21, 2005

Last updated in NPPES Jun 14, 2021

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License D0035322 (MD) Secondary

2084S0012X Sleep Medicine (Psychiatry & Neurology) Physician Allopathic & Osteopathic Physicians · License DOO35322 (MD) 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
0501704	Other	MD	EVERCARE
237076	Other	VA	ANTHEM BC/BS
372721	Other	MD	MAMASI/MDIPA.OPT. CH. DME
4137502	Other	MD	AETNA PPO/MC/EPO
495169	Other	MD	NCPPO
186224	Other	MD	COVENTRY
5113	Other	DC	BC/BC OF DC
526711100	Medicaid	MD	-
613465	Other	MD	MAMSI/MDIPA/OPT. CHOICE
ZC6139	Other	MD	HEALTHNET
1306711010	Other	MD	CIGNA MD/VA
KFE9CO	Other	MD	BC/BS OF MD
237074	Other	VA	ANTHEM HEALTHKEEPERS
3327089	Other	MD	AETNA HMO
3473625	Other	VA	AETNA HMO
500310	Other	MD	UNITED HEALTHCARE

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.

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Frequently asked questions

What specialty is Konrad Bakker?

Konrad Bakker is registered in NPPES with the primary taxonomy of Sleep Medicine (Psychiatry & Neurology) 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 2021-06-14.