Nathaniel Spencer, M.D.
NPI 1710172689 · Emergency Medicine Physician · Brooklyn, NY
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathaniel Spencer, M.D. is a Emergency Medicine Physician provider in Brooklyn, NY (NPI 1710172689).
Provider details
- NPI number
- 1710172689
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A112545 (CA)
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
18 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
641 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 | 254 | $181 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 161 | $9 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 117 | $125 |
| Critical Care, First 30-74 Minutes99291 | 85 | $222 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 24 | $73 |
Typical Medicare-allowed amounts for these services range $9–$222 (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 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 28 | 28 |
| Ondansetronbrand: Ondansetron Odt | 20 | 20 |
| Doxycycline Hyclate | 20 | 20 |
| Meclizine Hcl | 18 | 18 |
| Ibuprofen | 17 | 17 |
| Methylprednisolone | 16 | 16 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 16 | 16 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-09-13
- Last updated
- 2012-08-09
Frequently asked questions
- What is Nathaniel Spencer's NPI number?
- Nathaniel Spencer's National Provider Identifier (NPI) is 1710172689, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathaniel Spencer's specialty?
- Nathaniel Spencer is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nathaniel Spencer located?
- Nathaniel Spencer's practice location on file with NPPES is 965 48th St, Brooklyn, NY 11219-2919.
- What is Nathaniel Spencer's phone number?
- The practice phone number listed in the NPPES registry for Nathaniel Spencer is (718) 283-6029.
- Does Nathaniel Spencer accept Medicare?
- Nathaniel Spencer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathaniel Spencer's NPI active?
- Yes — Nathaniel Spencer's NPI (1710172689) is active in the NPPES registry as of the last update on 2012-08-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.