Nicholas Greco, M.D.
NPI 1023325289 · Emergency Medicine Physician · Pasadena, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nicholas Greco, M.D. is a Emergency Medicine Physician provider in Pasadena, CA (NPI 1023325289).
Provider details
- NPI number
- 1023325289
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A113953 (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
15 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
773 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) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 357 | $8 |
| Critical Care, First 30-74 Minutes99291 | 180 | $217 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 163 | $176 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 38 | $120 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 13 | $178 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cyclobenzaprine Hcl | 28 | 28 |
| Cephalexin | 27 | 26 |
| Cefdinir | 24 | 24 |
| Doxycycline Hyclate | 23 | 23 |
| Famotidine | 23 | 23 |
| Methylprednisolone | 20 | 20 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 19 | 19 |
| Ibuprofen | 19 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-09-09
- Last updated
- 2013-08-21
Frequently asked questions
- What is Nicholas Greco's NPI number?
- Nicholas Greco's National Provider Identifier (NPI) is 1023325289, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nicholas Greco's specialty?
- Nicholas Greco is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nicholas Greco located?
- Nicholas Greco's practice location on file with NPPES is 100 W California Blvd, Pasadena, CA 91105-3010.
- What is Nicholas Greco's phone number?
- The practice phone number listed in the NPPES registry for Nicholas Greco is (626) 397-5112.
- Does Nicholas Greco accept Medicare?
- Nicholas Greco is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nicholas Greco's NPI active?
- Yes — Nicholas Greco's NPI (1023325289) is active in the NPPES registry as of the last update on 2013-08-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.