Peter Phelan, MD
NPI 1548358534 · Internal Medicine Physician · Rockford, IL
Peter Phelan, MD is a Internal Medicine Physician provider in Rockford, IL (NPI 1548358534).
Provider details
- NPI number
- 1548358534
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036070636 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Mirtazapine | 35 |
| Atenolol | 35 |
| Folic Acid | 35 |
| Gabapentin | 28 |
| Donepezil Hcl | 20 |
| Memantine Hcl | 20 |
| Furosemide | 16 |
| Losartan Potassium | 14 |
| Metoprolol Succinate | 14 |
| Lisinopril/Hydrochlorothiazidebrand: Lisinopril-Hydrochlorothiazide | 13 |
Practice location
Mailing address
Additional practice locations (1)
- 3775 N Mulford RdRockford, IL 61114Phone: (779) 696-8400
Registry dates
- Enumerated
- 2006-10-11
- Last updated
- 2021-02-19
- Certified
- 2021-02-19
Frequently asked questions
- What is Peter Phelan's NPI number?
- Peter Phelan's National Provider Identifier (NPI) is 1548358534, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Peter Phelan's specialty?
- Peter Phelan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Peter Phelan located?
- Peter Phelan's practice location on file with NPPES is 3505 North Bell School Road, Rockford, IL 61114.
- What is Peter Phelan's phone number?
- The practice phone number listed in the NPPES registry for Peter Phelan is (779) 696-0300.
- Is Peter Phelan's NPI active?
- Yes — Peter Phelan's NPI (1548358534) is active in the NPPES registry as of the last update on 2021-02-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.