Robert Lowsky, MD
NPI 1083756308 · Hematology (Internal Medicine) Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Hematopoietic Cell Transplantation and Cellular Therapy · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Lowsky, MD is a Hematology (Internal Medicine) Physician provider in Stanford, CA (NPI 1083756308).
Provider details
- NPI number
- 1083756308
- Entity type
- Individual
- Primary specialty
- Hematology (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- C50659 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
254 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 High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 134 | $163 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 98 | $134 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 22 | $208 |
Typical Medicare-allowed amounts for these services range $134–$208 (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 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Acyclovir | 63 | 23 |
| Ruxolitinib Phosphatebrand: Jakafi | 59 | — |
| Belumosudil Mesylatebrand: Rezurock | 40 | — |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 39 | 19 |
| Prednisone | 31 | 12 |
| Pantoprazole Sodium | 19 | — |
| Dexamethasone | 15 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-02-13
- Last updated
- 2024-04-12
- Certified
- 2024-04-12
Frequently asked questions
- What is Robert Lowsky's NPI number?
- Robert Lowsky's National Provider Identifier (NPI) is 1083756308, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Lowsky's specialty?
- Robert Lowsky is listed in the NPPES registry with a primary specialty of Hematology (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Lowsky located?
- Robert Lowsky's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Robert Lowsky's phone number?
- The practice phone number listed in the NPPES registry for Robert Lowsky is (650) 723-4000.
- Does Robert Lowsky accept Medicare?
- Robert Lowsky is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Lowsky's NPI active?
- Yes — Robert Lowsky's NPI (1083756308) is active in the NPPES registry as of the last update on 2024-04-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.