Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Katherine J Gerlach, MD
Pediatrics Physician in Toledo, OH · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1609094473
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Registry record
Entity type Individual (Type 1)
Name Katherine J Gerlach
Credential MD
Sex Female
Practice address 3922 Woodley Rd, Suite 100, Toledo, OH, 43606
Phone (419) 291-2121
Fax (419) 479-6017
Enumeration date Apr 24, 2007
Last updated in NPPES Nov 3, 2023
Taxonomy & licenses
208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 35.089023 (OH) 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 |
|---|---|---|---|
| 000000538191 | Other | OH | ANTHEM |
| 7574901 | Other | OH | AETNA |
| 06791 | Other | OH | PARAMOUNT |
| 2751071 | Medicaid | OH | - |
| 7475901 | Other | OH | PPOM |
| 47131 | Other | MI | HEALTH PLAN OF MICHIGAN |
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
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.
What specialty is Katherine Gerlach?
Katherine Gerlach is registered in NPPES with the primary taxonomy of Pediatrics Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-03.