Stephen En Ling, M.D.
Internal Medicine Physician · Mountain View, CA
Stephen En Ling, M.D. is an internal medicine physician with a practice address in Mountain View, California, and NPI 1841337045, issued on Jan 30, 2007. Check the license (California G61961, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Stephen En Ling
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G61961 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2660 Solace PL, Mountain View, CA 94040
- Phone
- (650) 966-1223
- Enumerated
- Jan 30, 2007
- Record last updated
- Feb 11, 2022
- Fax
- (650) 934-2414
- Medicare enrollment
- Enrolled (PECOS I20110818000731); accepts Medicare assignment
- Medical or professional school
- University Of California, Davis School Of Medicine, 1986
- Entity
- Type 1 · individual
Also registered at 2660 Solace PL
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Stephen En Ling in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G61961Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
11% more Medicare Part D claims than the average internal medicine physician in 2024
3,540 Medicare Part D claims for 460 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. 60 claims were for opioids.
Most prescribed
- Amlodipine Besylate272 claims
- Atorvastatin Calcium202 claims
- Losartan Potassium201 claims
- Lisinopril155 claims
- Levothyroxine Sodium140 claims
- Metformin Hcl138 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.
Bills Medicare through one group practice
- Permanente Medical Group IncSanta Clara, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
119 internal medicine physician records list a practice address in Mountain View
They are 119 of the 2,467 NPPES records with a practice address in Mountain View, and 17,696 internal medicine physician records in California.
All 119 in Mountain View → All 17,696 in California → Every provider in Mountain View →
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Common questions
What is Stephen En Ling, M.D.'s NPI number?
Stephen En Ling, M.D.'s National Provider Identifier (NPI) is 1841337045, issued on Jan 30, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Stephen En Ling, M.D. located?
The NPPES record lists a practice address at 2660 Solace PL, Mountain View, CA, 94040. Phone: (650) 966-1223. Providers update this record themselves, so call before visiting.
How can I verify Stephen En Ling, M.D.'s license?
NPPES lists California license number G61961, 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 Stephen En Ling, M.D. prescribe under Medicare Part D?
In 2024, Stephen En Ling, M.D. had 3,540 Medicare Part D claims for 460 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.