Mark Lee, MD
NPI 1558322479 · Nephrology Physician · Whittier, CA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Lee, MD is a Nephrology Physician provider in Whittier, CA (NPI 1558322479).
Provider details
- NPI number
- 1558322479
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- A68664 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 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
1,063 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) |
|---|---|---|
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older)90960 | 577 | $350 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 217 | $77 |
| Dialysis Services, 2-3 Physician Visits Per Month (20 Years Or Older)90961 | 150 | $291 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 57 | $80 |
| Dialysis Services, 1 Physician Visit Per Month (20 Years Or Older)90962 | 24 | $202 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 21 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 76 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Parenteral Amino Acid 20% No.1brand: Prosol | 269 | 12 |
| Amlodipine Besylate | 212 | 59 |
| Sucroferric Oxyhydroxidebrand: Velphoro | 207 | 33 |
| Sevelamer Carbonate | 205 | 55 |
| Dapagliflozin Propanediolbrand: Farxiga | 156 | 27 |
| Losartan Potassium | 152 | 36 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$697 across 31 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
- 2006-03-30
- Last updated
- 2012-07-20
Frequently asked questions
- What is Mark Lee's NPI number?
- Mark Lee's National Provider Identifier (NPI) is 1558322479, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Lee's specialty?
- Mark Lee is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Lee located?
- Mark Lee's practice location on file with NPPES is 11147 Washington Blvd, Whittier, CA 90606-3007.
- What is Mark Lee's phone number?
- The practice phone number listed in the NPPES registry for Mark Lee is (562) 695-6988.
- Does Mark Lee accept Medicare?
- Mark Lee is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Lee's NPI active?
- Yes — Mark Lee's NPI (1558322479) is active in the NPPES registry as of the last update on 2012-07-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.