Debra Greenfield, M.D.
NPI 1558525964 · Internal Medicine Physician · West Hempstead, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Debra Greenfield, M.D. is a Internal Medicine Physician provider in West Hempstead, NY (NPI 1558525964).
Provider details
- NPI number
- 1558525964
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 156795 (NY)
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
17 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
497 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) |
|---|---|---|
| Face-To-Face Behavioral Counseling for Obesity, 15 MinutesG0447 | 208 | $28 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 142 | $103 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 118 | $146 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 29 | $191 |
Typical Medicare-allowed amounts for these services range $28–$191 (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 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tirzepatidebrand: Mounjaro | 207 | 29 |
| Semaglutidebrand: Ozempic | 156 | 21 |
| Metformin Hcl | 119 | 49 |
| Semaglutidebrand: Wegovy | 53 | 14 |
| Naltrexone Hcl | 25 | 12 |
| Topiramate | 18 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$379 across 14 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
- 2008-07-15
- Last updated
- 2008-07-15
Frequently asked questions
- What is Debra Greenfield's NPI number?
- Debra Greenfield's National Provider Identifier (NPI) is 1558525964, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Debra Greenfield's specialty?
- Debra Greenfield is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Debra Greenfield located?
- Debra Greenfield's practice location on file with NPPES is 324 Elm St, West Hempstead, NY 11552-3223.
- What is Debra Greenfield's phone number?
- The practice phone number listed in the NPPES registry for Debra Greenfield is (516) 481-6911.
- Does Debra Greenfield accept Medicare?
- Debra Greenfield is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Debra Greenfield's NPI active?
- Yes — Debra Greenfield's NPI (1558525964) is active in the NPPES registry as of the last update on 2008-07-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.