Nathan Zziwambazza, MD
NPI 1033160296 · Emergency Medicine Physician · Howell, MI
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathan Zziwambazza, MD is a Emergency Medicine Physician provider in Howell, MI (NPI 1033160296).
Provider details
- NPI number
- 1033160296
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 4301074219 (MI)
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
20 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
233 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 Moderate Level of Medical Decision Making99284 | 97 | $118 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 63 | $169 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 35 | $8 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 19 | $70 |
| Critical Care, First 30-74 Minutes99291 | 19 | $206 |
Typical Medicare-allowed amounts for these services range $8–$206 (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 |
|---|---|---|
| Methylprednisolone | 47 | 44 |
| Cephalexin | 33 | 33 |
| Ondansetronbrand: Ondansetron Odt | 27 | 27 |
| Ketorolac Tromethamine | 26 | 23 |
| Cyclobenzaprine Hcl | 26 | 25 |
| Azithromycin | 24 | 24 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 16 | 16 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-13
- Last updated
- 2008-05-20
Frequently asked questions
- What is Nathan Zziwambazza's NPI number?
- Nathan Zziwambazza's National Provider Identifier (NPI) is 1033160296, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathan Zziwambazza's specialty?
- Nathan Zziwambazza is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nathan Zziwambazza located?
- Nathan Zziwambazza's practice location on file with NPPES is 620 Byron Rd, Howell, MI 48843-1002.
- What is Nathan Zziwambazza's phone number?
- The practice phone number listed in the NPPES registry for Nathan Zziwambazza is (517) 545-6000.
- Does Nathan Zziwambazza accept Medicare?
- Nathan Zziwambazza is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathan Zziwambazza's NPI active?
- Yes — Nathan Zziwambazza's NPI (1033160296) is active in the NPPES registry as of the last update on 2008-05-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.