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

Dr. Jonathan Spencer Mellen, MD

Individual provider Gastroenterology Physician · NPI 1609919471

Dr. Jonathan Spencer Mellen, MD is a Gastroenterology in Phoenix, Arizona. Qualified in 2004, 22 years ago. Practices with Northern Arizona Healthcare Corporation, a 395-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Alaska and Arizona.

Years since qualifying
22
Licensed in
AK, AZ
In the registry since
2007
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

9305 W Thomas Rd Ste 478
Phoenix, AZ 85037-3375
Phone: (623) 236-8507
Fax: (623) 236-8508
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 2490 S Woodworth Loop Ste 200, Palmer, AK 99645-7410 — (907) 861-6315
  • 1200 N Beaver St, Flagstaff, AZ 86001-3118 — (928) 773-2332
  • 2400 S Avenue A, Yuma, AZ 85364-7170 — (928) 336-3213

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 44619 (AZ)
Gastroenterology Physician Taxonomy 207RG0100X · Licence 210986 (AK)

Record details

NPI number1609919471
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 14, 2007
Last updated in NPPESJune 11, 2026
Certification dateJune 11, 2026

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2004 (22 years in practice)
Group practice Northern Arizona Healthcare Corporation — 395 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

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