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

Dr. John Howard Greenfield III, MD

Individual provider Orthopaedic Surgery Physician · NPI 1861406506

Dr. John Howard Greenfield III, MD is an Orthopedic Surgery in Sacramento, California. Graduated from University of Texas Southwestern Medical School at Dallas in 2000, 26 years ago. Practices with Permanente Medical Group Inc, a 10,941-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California and Georgia.

Years since qualifying
26
Trained at
University of Texas Southwestern Medical School at Dallas
Licensed in
CA, GA
In the registry since
2006
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

1201 Alhambra Blvd Ste 400
Sacramento, CA 95816-5243
Phone: (916) 733-5098
Fax: (916) 733-9814
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1035 Southcrest Dr, Stockbridge, GA 30281-6118 — (770) 389-9005

Specialties & licences

Orthopaedic Surgery Physician (primary) Taxonomy 207X00000X · Licence A91052 (CA)
Specialist Taxonomy 174400000X · Licence 052272 (GA)

Record details

NPI number1861406506
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 28, 2006
Last updated in NPPESMay 7, 2026
Certification dateMay 7, 2026

Medicare enrollment

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

Medicare specialtyORTHOPEDIC SURGERY
Medical schoolUNIVERSITY OF TEXAS SOUTHWESTERN MEDICAL SCHOOL AT DALLAS
Graduated 2000 (26 years in practice)
Group practice Permanente Medical Group Inc — 10941 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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