Ruthee-Lu Bayer, MD
NPI 1215082961 · Hematology & Oncology Physician · Lake Success, NY
Enrolled with Medicare as Practitioner - Medical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ruthee-Lu Bayer, MD is a Hematology & Oncology Physician provider in Lake Success, NY (NPI 1215082961).
Provider details
- NPI number
- 1215082961
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 194588 (NY)
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
437 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 | 210 | $202 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 181 | $144 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 29 | $18 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 17 | $104 |
Typical Medicare-allowed amounts for these services range $18–$202 (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 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Acyclovir | 100 | 24 |
| Valacyclovir Hclbrand: Valacyclovir | 57 | 15 |
| Ruxolitinib Phosphatebrand: Jakafi | 44 | — |
| Gabapentin | 34 | 13 |
| Atovaquone | 30 | — |
| Prednisone | 23 | — |
| Sertraline Hcl | 23 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-24
- Last updated
- 2007-07-08
Frequently asked questions
- What is Ruthee-Lu Bayer's NPI number?
- Ruthee-Lu Bayer's National Provider Identifier (NPI) is 1215082961, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ruthee-Lu Bayer's specialty?
- Ruthee-Lu Bayer is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Ruthee-Lu Bayer located?
- Ruthee-Lu Bayer's practice location on file with NPPES is The Monter Cancer Center, Lake Success, NY 11042.
- What is Ruthee-Lu Bayer's phone number?
- The practice phone number listed in the NPPES registry for Ruthee-Lu Bayer is (516) 734-8973.
- Does Ruthee-Lu Bayer accept Medicare?
- Ruthee-Lu Bayer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ruthee-Lu Bayer's NPI active?
- Yes — Ruthee-Lu Bayer's NPI (1215082961) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.