Jay Diamond, M.D.
NPI 1639437338 · Emergency Medicine Physician · New York, NY
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jay Diamond, M.D. is a Emergency Medicine Physician provider in New York, NY (NPI 1639437338).
Provider details
- NPI number
- 1639437338
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD15777 (RI)
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
14 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
347 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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 164 | $190 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 97 | $132 |
| Critical Care, First 30-74 Minutes99291 | 46 | $236 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 24 | $75 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 16 | $192 |
Typical Medicare-allowed amounts for these services range $75–$236 (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.
Practice location
Mailing address
Additional practice locations (2)
- 55 Claverick StSuite 100Providence, RI 02903-4144Phone: (202) 877-8080Fax: (202) 877-7633
- 55 Claverick StSuite 100Providence, RI 02903-4144Phone: (202) 877-8080Fax: (202) 877-7633
Registry dates
- Enumerated
- 2012-05-01
- Last updated
- 2024-07-30
- Certified
- 2024-07-30
Frequently asked questions
- What is Jay Diamond's NPI number?
- Jay Diamond's National Provider Identifier (NPI) is 1639437338, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jay Diamond's specialty?
- Jay Diamond is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jay Diamond located?
- Jay Diamond's practice location on file with NPPES is 550 1st Ave, New York, NY 10016-6402.
- What is Jay Diamond's phone number?
- The practice phone number listed in the NPPES registry for Jay Diamond is (404) 513-3880.
- Does Jay Diamond accept Medicare?
- Jay Diamond is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jay Diamond's NPI active?
- Yes — Jay Diamond's NPI (1639437338) is active in the NPPES registry as of the last update on 2024-07-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.