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

Stephan Stellmacher, DO-FACP

Individual provider Internal Medicine Physician · NPI 1588726970

Stephan Stellmacher, DO-FACP is an Internal Medicine in Phoenix, Arizona. Qualified in 1990, 36 years ago. Practices with Dhew Ind Hlth Sv Hlth Svs and Mntl Hlth Adm, a 223-clinician group and accepts Medicare assignment. Licensed in Arizona.

Years since qualifying
36
Licensed in
AZ
In the registry since
2006
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Practice location Address checks out

4212 N 16th St
Phoenix, AZ 85016-5319
Phone: (602) 263-1200
Fax: (602) 263-1619
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 3828 (AZ)

Record details

NPI number1588726970
Entity typeIndividual (Type 1)
GenderMale
Credentials DO-FACP
Sole proprietorNo
NPI enumeratedDecember 14, 2006
Last updated in NPPESMarch 17, 2026
Certification dateMarch 17, 2026
Mailing addressPo Box 95460, Cleveland, OH 44101-0033

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Also practisesEMERGENCY MEDICINE
Medical schoolOTHER
Graduated 1990 (36 years in practice)
Group practice Dhew Ind Hlth Sv Hlth Svs And Mntl Hlth Adm — 223 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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