Christopher Michael Fields, MD
Internal Medicine Physician · San Diego, CA
Christopher Michael Fields, MD is an internal medicine physician with a practice address in San Diego, California, and NPI 1427623677, issued on May 20, 2021. Check the license (California A196968, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Christopher Michael Fields
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A196968 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4650 Palm Ave, San Diego, CA 92154
- Phone
- (833) 574-2273
- Enumerated
- May 20, 2021
- Record last updated
- Nov 9, 2025
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 4650 Palm Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Samuel Amukele, MDUrology Physician1871570341
- David Anderson, P.T.Orthopedic Physical Therapist1689879215
- Lauren Aragon, PHARMDPharmacist1689110827
- Michelle Brodie, MSNeurology Physical Therapist1467659607
- La Monica CervantesMarriage & Family Therapist1548896772
- Henry Chan, PHARM.D.Pharmacist1114197100
Verify Christopher Michael Fields in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A196968Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average internal medicine physician in 2024
156 Medicare Part D claims for 41 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Atorvastatin Calcium11 claims
- Losartan Potassium11 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: $43.99
2 payments; by number, the most common kind was food and beverage; the largest payer was Dexcom, Inc. 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.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Christopher Michael Fields among 17,696 internal medicine physician records in California
Christopher Michael Fields, MD 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 2021, is newer than 92% of them.
- NPI issued2021 · 92% of these records are older, 5% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- 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).
961 internal medicine physician records list a practice address in San Diego
They are 961 of the 52,937 NPPES records with a practice address in San Diego, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in San Diego → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Benedict Dillon, M.D.San Diego, CA 921541710142708
- Sameeh Fakhro, MDSan Diego, CA 921541245718865
- David Fan, M.D.San Diego, CA 921541326488040
- Ralph Johnson, M.D.San Diego, CA 921541669673505
- Silvia Munoz, M.D.San Diego, CA 921541326458613
- Parvaneh Najafi, M.D.San Diego, CA 921541275771974
- Fauzi Najar, MDSan Diego, CA 921541689166977
- Miguel Pena-Ruiz, M.D.San Diego, CA 921541063622819
Common questions
What is Christopher Michael Fields, MD's NPI number?
Christopher Michael Fields, MD's National Provider Identifier (NPI) is 1427623677, issued on May 20, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Christopher Michael Fields, MD located?
The NPPES record lists a practice address at 4650 Palm Ave, San Diego, CA, 92154. Phone: (833) 574-2273. Providers update this record themselves, so call before visiting.
How can I verify Christopher Michael Fields, MD's license?
NPPES lists California license number A196968, 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 Christopher Michael Fields, MD prescribe under Medicare Part D?
In 2024, Christopher Michael Fields, MD had 156 Medicare Part D claims for 41 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.