John Howard Greenfield, M. D.
Orthopaedic Surgery Physician · Sacramento, CA
John Howard Greenfield, M. D. is an orthopaedic surgery physician with a practice address in Sacramento, California, and NPI 1861406506, issued on Jul 28, 2006. Check the license (California A91052, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Howard Greenfield
- Credential
- M. D.
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License numbers
- A91052 CA
052272 GA
Self-reported in NPPES; status is on the state search - Practice location
- 1201 Alhambra Blvd Ste 400, Sacramento, CA 95816
- Phone
- (916) 733-5098
- Enumerated
- Jul 28, 2006
- Record last updated
- May 7, 2026
- Fax
- (916) 733-9814
- Medicare enrollment
- Enrolled (PECOS I20050829000374); accepts Medicare assignment
- Medical or professional school
- University Of Texas Southwestern Medical School At Dallas, 2000
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 2,276 in California → Look up another NPI →
Also registered at 1201 Alhambra Blvd Ste 400
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Leslie Jones, RN, FNPFamily Nurse Practitioner1295005015
- Moonny Lee, PA-CPhysician Assistant1124088893
Verify John Howard Greenfield in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A91052Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024
42 Medicare Part D claims for 20 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 15 claims were for opioids.
Most prescribed
- Celecoxib14 claims
- Hydrocodone-Acetaminophen12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $1,249.74
16 payments; by number, the most common kind was food and beverage; the largest payer was Arthrex, Inc. The 15,003 providers of this specialty with any payment received $23,022.89 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Permanente Medical Group IncSacramento, CA
- Sutter Valley Medical FoundationSacramento, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Howard Greenfield among 2,276 orthopaedic surgery physician records in California
John Howard Greenfield, M. D. is one of 2,276 orthopaedic surgery physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 46% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2000 · median 2003 among the 1,347 with a school on file
- Record last updated2026 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Surgery Physician providers in California
There are 2,276 orthopaedic surgery physician records in California.
All 2,276 in California → Every provider in Sacramento → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Frank Boutin, M.D.Sacramento, CA 958161265440721
- John Chu, M.D.Sacramento, CA 958161942286364
- Mark Endicott, M.D.Sacramento, CA 958161093783425
- Alan Hirahara, MD FRCSCSacramento, CA 958161336139435
- Samuel Hu, M.D.Sacramento, CA 958161235107053
- Jerry Labson, M.D.Sacramento, CA 958161346231644
- Michael Leathers, M.D.Sacramento, CA 958161386635332
- George Lian, M.D.Sacramento, CA 958161831162593
Common questions
What is John Howard Greenfield, M. D.'s NPI number?
John Howard Greenfield, M. D.'s National Provider Identifier (NPI) is 1861406506, issued on Jul 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Howard Greenfield, M. D. located?
The NPPES record lists a practice address at 1201 Alhambra Blvd Ste 400, Sacramento, CA, 95816. Phone: (916) 733-5098. Providers update this record themselves, so call before visiting.
How can I verify John Howard Greenfield, M. D.'s license?
NPPES lists California license number A91052, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Howard Greenfield, M. D. prescribe under Medicare Part D?
In 2024, John Howard Greenfield, M. D. had 42 Medicare Part D claims for 20 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.