Stephen Ling, M.D.
NPI 1841337045 · Internal Medicine Physician · Mountain View, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Ling, M.D. is a Internal Medicine Physician provider in Mountain View, CA (NPI 1841337045).
Provider details
- NPI number
- 1841337045
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G61961 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
18 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 18 | $100 |
Typical Medicare-allowed amounts for these services range $100–$100 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 71 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 272 | 98 |
| Atorvastatin Calcium | 202 | 81 |
| Losartan Potassium | 201 | 73 |
| Lisinopril | 155 | 58 |
| Levothyroxine Sodium | 140 | 49 |
| Metformin Hcl | 138 | 46 |
| Tamsulosin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-30
- Last updated
- 2022-02-11
Frequently asked questions
- What is Stephen Ling's NPI number?
- Stephen Ling's National Provider Identifier (NPI) is 1841337045, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Ling's specialty?
- Stephen Ling is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Ling located?
- Stephen Ling's practice location on file with NPPES is 2660 Solace Pl, Mountain View, CA 94040-4316.
- What is Stephen Ling's phone number?
- The practice phone number listed in the NPPES registry for Stephen Ling is (650) 966-1223.
- Does Stephen Ling accept Medicare?
- Stephen Ling is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Ling's NPI active?
- Yes — Stephen Ling's NPI (1841337045) is active in the NPPES registry as of the last update on 2022-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.