Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

John W. Ritter MD Inc

Organization Pain Medicine (Anesthesiology) Physician · NPI 1326305343

John W. Ritter MD Inc is a Pain Medicine (Anesthesiology) Physician in Glendora, California. Licensed in California. Registered with an NPI since 2012.

Licensed in
CA
In the registry since
2012
What do these letters mean?
Inc — Incorporated
A form of business registration, not a clinical qualification.

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Practice location Address checks out

640 W Foothill Blvd Ste 101
Glendora, CA 91741-2456
Phone: (626) 335-5452
Fax: (626) 335-5462
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pain Medicine (Anesthesiology) Physician (primary) Taxonomy 207LP2900X · Licence A20970 (CA)

Record details

NPI number1326305343
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official John Ritter — President · (626) 335-5452
NPI enumeratedApril 16, 2012
Last updated in NPPESMay 15, 2012
Mailing address640 W Foothill Blvd, Suite 101, Glendora, CA 91741-2456

Other providers in Glendora