Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Douglas A Zwemer, MD
Surgery Physician in Muskegon, MI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1386734184
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Registry record
Entity type Individual (Type 1)
Name Douglas A Zwemer
Credential MD
Sex Male
Practice address 1745 Holton Rd Ste C, Muskegon, MI, 49445
Phone (231) 747-9902
Fax (855) 761-1953
Enumeration date Oct 13, 2006
Last updated in NPPES Feb 5, 2020
Taxonomy & licenses
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 |
|---|---|---|---|
| 3453681 | Medicaid | MI | - |
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.
Frequently asked questions
How do I verify Douglas Zwemer's NPI record?
Cross-check NPI 1386734184 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1386734184 active?
Yes, as of the latest NPPES snapshot, NPI 1386734184 is active (record last updated 2020-02-05).
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-02-05.