Daniel Lewis, M.D.
NPI 1598749079 · Hematology & Oncology Physician · San Luis Obispo, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Daniel Lewis, M.D. is a Hematology & Oncology Physician provider in San Luis Obispo, CA (NPI 1598749079).
Provider details
- NPI number
- 1598749079
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G57020 (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
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
648 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 476 | $132 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 79 | $93 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 47 | $186 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 27 | $132 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 19 | $226 |
Typical Medicare-allowed amounts for these services range $93–$226 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 56 | 14 |
| Tamoxifen Citrate | 54 | 15 |
| Lorazepam | 33 | — |
| Olanzapine | 28 | — |
| Zolpidem Tartrate | 27 | — |
| Alprazolam | 25 | — |
| Potassium Chloride | 24 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,213 across 61 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
Additional practice locations (1)
- 1023 Pacific StSan Luis Obispo, CA 93401-3623Phone: (805) 543-3350Fax: (805) 549-9653
Registry dates
- Enumerated
- 2005-11-30
- Last updated
- 2023-11-02
- Certified
- 2023-11-02
Frequently asked questions
- What is Daniel Lewis's NPI number?
- Daniel Lewis's National Provider Identifier (NPI) is 1598749079, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Daniel Lewis's specialty?
- Daniel Lewis is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Daniel Lewis located?
- Daniel Lewis's practice location on file with NPPES is 715 Tank Farm Rd Ste C, San Luis Obispo, CA 93401-7068.
- What is Daniel Lewis's phone number?
- The practice phone number listed in the NPPES registry for Daniel Lewis is (805) 543-5577.
- Does Daniel Lewis accept Medicare?
- Daniel Lewis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Daniel Lewis's NPI active?
- Yes — Daniel Lewis's NPI (1598749079) is active in the NPPES registry as of the last update on 2023-11-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.