Son Phung, MD
NPI 1174550172 · Internal Medicine Physician · Flint, MI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Son Phung, MD is a Internal Medicine Physician provider in Flint, MI (NPI 1174550172).
Provider details
- NPI number
- 1174550172
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 4301079180 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 68 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 161 | 33 |
| Metformin Hcl | 145 | 24 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 118 | 25 |
| Lisinopril | 111 | 24 |
| Hydrochlorothiazide | 100 | 19 |
| Atorvastatin Calcium | 97 | 24 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$100 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 400 Medical Park DrWatervliet, MI 49098-9225Phone: (269) 463-3600
Registry dates
- Enumerated
- 2006-06-26
- Last updated
- 2023-03-07
- Certified
- 2022-06-08
Frequently asked questions
- What is Son Phung's NPI number?
- Son Phung's National Provider Identifier (NPI) is 1174550172, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Son Phung's specialty?
- Son Phung is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Son Phung located?
- Son Phung's practice location on file with NPPES is 725 Mason St, Flint, MI 48503-2421.
- What is Son Phung's phone number?
- The practice phone number listed in the NPPES registry for Son Phung is (810) 496-5543.
- Does Son Phung accept Medicare?
- Son Phung is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Son Phung's NPI active?
- Yes — Son Phung's NPI (1174550172) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.