Diego F. Ferro, M.D.
Specialist · Stockton, CA
Diego F. Ferro, M.D. is a specialist with a practice address in Stockton, California, and NPI 1700027877, issued on Mar 18, 2009. Check the license (California A106012, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Diego F. Ferro
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- License number
- A106012 CA
Self-reported in NPPES; status is on the state search - Practice location
- 420 W Acacia St, Stockton, CA 95203
- Phone
- (209) 948-1583
- Enumerated
- Mar 18, 2009
- Record last updated
- Feb 13, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (209) 948-3564
- Medicaid ID
- 1700027877 CA
- Medicare enrollment
- Enrolled (PECOS I20110620000527); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest specialist records → All 5,749 in California → Look up another NPI →
Also registered at 420 W Acacia St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Diego F. Ferro in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license A106012Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9.4 times the Medicare Part D claims of the average specialist in 2024
13,031 Medicare Part D claims for 1,124 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 382 claims were for opioids.
Most prescribed
- Atorvastatin Calcium796 claims
- Levothyroxine Sodium476 claims
- Losartan Potassium437 claims
- Metformin Hcl433 claims
- Amlodipine Besylate400 claims
- Gabapentin347 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: $255.10
8 payments; by number, the most common kind was food and beverage; the largest payer was Corcept Therapeutics. The 5,844 providers of this specialty with any payment received $4,760.79 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.
Diego F. Ferro among 5,749 specialist records in California
Diego F. Ferro, M.D. is one of 5,749 specialist records with a practice address in California. 30% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 60% of them.
- NPI issued2009 · 60% of these records are older, 38% newer
- In a Medicare fileYes · 30% of these records are
- In the CMS Doctors and Clinicians fileYes · 19% of these records are
- Graduated2002 · median 1989 among the 1,075 with a school on file
- Record last updated2020 · 77% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Specialist providers in California
There are 5,749 specialist records in California.
All 5,749 in California → Every provider in Stockton → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Kenneth Miselis, M.D.Stockton, CA 952031730154592
- Jasmine SourivongStockton, CA 952031215655311
- Stephanie Dentoni, M.D.Stockton, CA 952041821099888
- Prasad Dighe, MDStockton, CA 952041356377071
- Ronald Dugger, MDStockton, CA 952041790720688
- Peter Gannon, MDStockton, CA 952041275560286
- Frederick Gregorius, MDStockton, CA 952041013936608
- Lynette Hart, MDStockton, CA 952041639154438
Common questions
What is Diego F. Ferro, M.D.'s NPI number?
Diego F. Ferro, M.D.'s National Provider Identifier (NPI) is 1700027877, issued on Mar 18, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Diego F. Ferro, M.D. located?
The NPPES record lists a practice address at 420 W Acacia St, Stockton, CA, 95203. Phone: (209) 948-1583. Providers update this record themselves, so call before visiting.
How can I verify Diego F. Ferro, M.D.'s license?
NPPES lists California license number A106012, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Diego F. Ferro, M.D. prescribe under Medicare Part D?
In 2024, Diego F. Ferro, M.D. had 13,031 Medicare Part D claims for 1,124 beneficiaries; the average among specialist prescribers was 1,380. 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.