Michael Linsey, M.D.
NPI 1841215217 · Nephrology Physician · Pasadena, CA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Linsey, M.D. is a Nephrology Physician provider in Pasadena, CA (NPI 1841215217).
Provider details
- NPI number
- 1841215217
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 05D0681297 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
946 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 295 | $81 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 174 | $89 |
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older)90960 | 115 | $369 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 96 | $51 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 88 | $125 |
| Dialysis Services, 2-3 Physician Visits Per Month (20 Years Or Older) |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 37 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Dapagliflozin Propanediolbrand: Farxiga | 137 | 32 |
| Amlodipine Besylate | 113 | 40 |
| Losartan Potassium | 111 | 34 |
| Carvedilol | 104 | 26 |
| Atorvastatin Calcium | 66 | 15 |
| Furosemide | 50 | 18 |
| Torsemide | 47 | 15 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$80 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-13
- Last updated
- 2026-02-26
- Certified
- 2026-02-26
Frequently asked questions
- What is Michael Linsey's NPI number?
- Michael Linsey's National Provider Identifier (NPI) is 1841215217, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Linsey's specialty?
- Michael Linsey is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Linsey located?
- Michael Linsey's practice location on file with NPPES is 50 Alessandro Pl Ste 250, Pasadena, CA 91105-3149.
- What is Michael Linsey's phone number?
- The practice phone number listed in the NPPES registry for Michael Linsey is (626) 577-1675.
- Does Michael Linsey accept Medicare?
- Michael Linsey is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Linsey's NPI active?
- Yes — Michael Linsey's NPI (1841215217) is active in the NPPES registry as of the last update on 2026-02-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.