NPPES file of Aug 9, 2026

Edward C. Greenleaf, M.D.

Internal Medicine Physician · Stockton, CA

Edward C. Greenleaf, M.D. is an internal medicine physician with a practice address in Stockton, California, and NPI 1629158340, issued on Oct 17, 2006. Check the license (California G51488, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1629158340
Name
Edward C. Greenleaf
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
G51488 CA
Self-reported in NPPES; status is on the state search
Practice location
2027 Grand Canal Blvd Ste 25, Stockton, CA 95207
Phone
(209) 475-1111
Enumerated
Oct 17, 2006
Record last updated
Sep 11, 2025
Fax
(209) 475-1119
Medicaid ID
00G514880 CA
Medicare enrollment
Enrolled (PECOS I20080723000926); accepts Medicare assignment
Medical or professional school
University Of Alabama School Of Medicine, 1976
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify Edward C. Greenleaf in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G51488
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

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91% fewer Medicare Part D claims than the average internal medicine physician in 2024

294 Medicare Part D claims for 79 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 37 claims were for opioids.

  1. Edward Greenleaf294
  2. Specialty average3,176

Most prescribed

  1. Tamsulosin Hcl69 claims
  2. Ondansetron Hcl37 claims
  3. Hydrocodone-Acetaminophen23 claims
  4. Bicalutamide19 claims
  5. Cephalexin15 claims
  6. Ssd15 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: $30.79

2 payments; by number, the most common kind was food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Edward Greenleaf$30.79
  2. Specialty average$1,303.06

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Edward C. Greenleaf among 17,696 internal medicine physician records in California

Edward C. Greenleaf, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% 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 5% of them.

  • NPI issued2006 · 5% of these records are older, 56% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated1976 · median 2004 among the 11,065 with a school on file
  • Record last updated2025 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

89 internal medicine physician records list a practice address in Stockton

They are 89 of the 9,522 NPPES records with a practice address in Stockton, and 17,696 internal medicine physician records in California.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Virender Kamboj, MDStockton, CA 952071548317167
  2. Dheeraj Nandanoor, M.D.Stockton, CA 952071053725820
  3. Loc Nguyen, MDStockton, CA 952071962623462
  4. Kwabena Adubofour, M.D.Stockton, CA 952051033142088
  5. Saleha Ahmed, M.D.Stockton, CA 952091275561805
  6. James Belogorsky, MDStockton, CA 952091336104207
  7. John Blinn, MDStockton, CA 952091992761357
  8. Peter Drummond, DOStockton, CA 952091508822768

Common questions

What is Edward C. Greenleaf, M.D.'s NPI number?

Edward C. Greenleaf, M.D.'s National Provider Identifier (NPI) is 1629158340, issued on Oct 17, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Edward C. Greenleaf, M.D. located?

The NPPES record lists a practice address at 2027 Grand Canal Blvd Ste 25, Stockton, CA, 95207. Phone: (209) 475-1111. Providers update this record themselves, so call before visiting.

How can I verify Edward C. Greenleaf, M.D.'s license?

NPPES lists California license number G51488, 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 Edward C. Greenleaf, M.D. prescribe under Medicare Part D?

In 2024, Edward C. Greenleaf, M.D. had 294 Medicare Part D claims for 79 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.