Ilisa Wallach, M.D.
NPI 1629139340 · Internal Medicine Physician · New York, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ilisa Wallach, M.D. is a Internal Medicine Physician provider in New York, NY (NPI 1629139340).
Provider details
- NPI number
- 1629139340
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 176452 (NY)
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 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
137 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 | 60 | $161 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 49 | $108 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 28 | $147 |
Typical Medicare-allowed amounts for these services range $108–$161 (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 · 63 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 178 | 68 |
| Amlodipine Besylate | 161 | 60 |
| Metoprolol Succinate | 135 | 47 |
| Losartan Potassium | 130 | 39 |
| Rosuvastatin Calcium | 119 | 37 |
| Levothyroxine Sodium | 78 | 29 |
| Zolpidem Tartrate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-12-13
- Last updated
- 2016-02-02
Frequently asked questions
- What is Ilisa Wallach's NPI number?
- Ilisa Wallach's National Provider Identifier (NPI) is 1629139340, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ilisa Wallach's specialty?
- Ilisa Wallach is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ilisa Wallach located?
- Ilisa Wallach's practice location on file with NPPES is 1421 3rd Ave Fl 5, New York, NY 10028-1899.
- What is Ilisa Wallach's phone number?
- The practice phone number listed in the NPPES registry for Ilisa Wallach is (212) 717-5700.
- Does Ilisa Wallach accept Medicare?
- Ilisa Wallach is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ilisa Wallach's NPI active?
- Yes — Ilisa Wallach's NPI (1629139340) is active in the NPPES registry as of the last update on 2016-02-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.