Harpreet K. Singh, MD
Obesity Medicine (Internal Medicine) Physician · Oxnard, CA
Harpreet K. Singh, MD is an obesity medicine (internal medicine) physician with a practice address in Oxnard, California, and NPI 1942258124, issued on May 4, 2006. Check the license (California C55658, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Harpreet K. Singh
- Credential
- MD
- Primary taxonomy
- Obesity Medicine (Internal Medicine) Physician 207RB0002X
- License number
- C55658 CA
Self-reported in NPPES; status is on the state search - Practice location
- 921 W 7TH St, Oxnard, CA 93030
- Phone
- (805) 486-1601
- Enumerated
- May 4, 2006
- Record last updated
- Jul 9, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20130606000412); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest obesity medicine (internal medicine) physician records → All 17 in California → Look up another NPI →
Also registered at 921 W 7TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Stephen Hong, M.D.Cardiovascular Disease Physician1205856218
- Karan Deep Singh, M.D.Cardiovascular Disease Physician1851349047
Verify Harpreet K. Singh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C55658Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
16% fewer Medicare Part D claims than the average obesity medicine (internal medicine) physician in 2024
626 Medicare Part D claims for 194 beneficiaries, against an average of 742 among the 106 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium39 claims
- Levothyroxine Sodium33 claims
- Metoprolol Succinate30 claims
- Lisinopril25 claims
- Amlodipine Besylate24 claims
- Furosemide20 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: $144.69
2 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 80 providers of this specialty with any payment received $6,310.67 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 one group practice
- Karandeep Singh MD PCOxnard, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Harpreet K. Singh among 17 obesity medicine (internal medicine) physician records in California
Harpreet K. Singh, MD is one of 17 obesity medicine (internal medicine) physician records with a practice address in California. 71% 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 0% of them.
- NPI issued2006 · 0% of these records are older, 71% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 41% of these records are
- Record last updated2013 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RB0002X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obesity Medicine (Internal Medicine) Physician providers in California
There are 17 obesity medicine (internal medicine) physician records in California.
All 17 in California → Every provider in Oxnard → Obesity Medicine (Internal Medicine) Physician nationwide →
The 8 obesity medicine (internal medicine) physician records with the nearest ZIP codes
- Quyen Dao, M.D.Tustin, CA 927801932305034
- Eduardo Grunvald, M.DSan Diego, CA 921031497791339
- Arthur Aronson, M.D.San Diego, CA 921011780030122
- Sooji Rugh, M.D.Mountain View, CA 940431770799538
- Jill Blickley, DOSan Francisco, CA 941041730126152
- Nicole Grant, MDPalo Alto, CA 943041902007198
- Randall Caldron, MDWest Hills, CA 913071053475822
- Viktoriya Yanchuk, D.O.West Hills, CA 913071932587169
Common questions
What is Harpreet K. Singh, MD's NPI number?
Harpreet K. Singh, MD's National Provider Identifier (NPI) is 1942258124, issued on May 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Harpreet K. Singh, MD located?
The NPPES record lists a practice address at 921 W 7TH St, Oxnard, CA, 93030. Phone: (805) 486-1601. Providers update this record themselves, so call before visiting.
How can I verify Harpreet K. Singh, MD's license?
NPPES lists California license number C55658, 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 Harpreet K. Singh, MD prescribe under Medicare Part D?
In 2024, Harpreet K. Singh, MD had 626 Medicare Part D claims for 194 beneficiaries; the average among obesity medicine (internal medicine) physician prescribers was 742. 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.