Ranjit Kaur Reen, M.D.
Internal Medicine Physician · Fremont, CA
Ranjit Kaur Reen, M.D. is an internal medicine physician with a practice address in Fremont, California, and NPI 1568512432, issued on Jan 11, 2007. Check the license (California A52734, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ranjit Kaur Reen
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A52734 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1900 Mowry Ave, Fremont, CA 94538
- Phone
- (510) 791-5500
- Enumerated
- Jan 11, 2007
- Record last updated
- Jul 9, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (510) 790-9456
- Medicaid ID
- 00A527340 CA
- Medicare enrollment
- Enrolled (PECOS I20100408000072); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 1900 Mowry Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Zulfiqar Ali, M.DInternal Medicine Physician1093740227
- Ramsey Araj, MDSurgery Physician1871513663
- William Dugoni, MDSurgery Physician1427071075
- Pradeep Kumar, MD FACC FSCAICardiovascular Disease Physician1295838746
- Jennifer Preston, FNPFamily Nurse Practitioner1912383449
- Swetha Singh, M.D.Pediatrics Physician1275773202
Verify Ranjit Kaur Reen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A52734Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
27% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,317 Medicare Part D claims for 142 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Levothyroxine Sodium160 claims
- Rosuvastatin Calcium137 claims
- Amlodipine Besylate133 claims
- Clonidine Hcl121 claims
- Losartan Potassium114 claims
- Metformin Hcl113 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: $16.48
1 payment: food and beverage; the largest payer was Novo Nordisk 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.
125 internal medicine physician records list a practice address in Fremont
They are 125 of the 4,749 NPPES records with a practice address in Fremont, and 17,696 internal medicine physician records in California.
All 125 in Fremont → All 17,696 in California → Every provider in Fremont →
Other internal medicine physician records in California
- Jacob Aaron, MDSan Francisco, CA1407202518
- Alistair Aaronson, MDStanford, CA1457628760
- Jose Abad., MDSacramento, CA1144607219
- Donna Abare, MDOakland, CA1386722155
- Marce AbareScotts Valley, CA1457744708
- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Ranjit Kaur Reen, M.D.'s NPI number?
Ranjit Kaur Reen, M.D.'s National Provider Identifier (NPI) is 1568512432, issued on Jan 11, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ranjit Kaur Reen, M.D. located?
The NPPES record lists a practice address at 1900 Mowry Ave, Fremont, CA, 94538. Phone: (510) 791-5500. Providers update this record themselves, so call before visiting.
How can I verify Ranjit Kaur Reen, M.D.'s license?
NPPES lists California license number A52734, 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 Ranjit Kaur Reen, M.D. prescribe under Medicare Part D?
In 2024, Ranjit Kaur Reen, M.D. had 2,317 Medicare Part D claims for 142 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.