Patrick Chang, MD
NPI 1912009705 · Family Medicine Physician · Grand Blanc, MI
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Patrick Chang, MD is a Family Medicine Physician provider in Grand Blanc, MI (NPI 1912009705).
Provider details
- NPI number
- 1912009705
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 4301063927 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
557 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 192 | $121 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 103 | $121 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 51 | $85 |
| Testing for Presence of Drug, Read By Direct Observation80305 | 44 | $12 |
| Residence Visit for Established Patient With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99349 | 37 | $127 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 31 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 121 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 281 | 76 |
| Buprenorphine Hcl/Naloxone Hclbrand: Buprenorphine-Naloxone | 266 | 29 |
| Amlodipine Besylate | 241 | 62 |
| Lisinopril | 214 | 54 |
| Losartan/Hydrochlorothiazidebrand: Losartan-Hydrochlorothiazide | 199 | 54 |
| Simvastatin | 163 | 41 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$632 across 17 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
Registry dates
- Enumerated
- 2006-09-02
- Last updated
- 2025-12-19
- Certified
- 2025-12-19
Frequently asked questions
- What is Patrick Chang's NPI number?
- Patrick Chang's National Provider Identifier (NPI) is 1912009705, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Patrick Chang's specialty?
- Patrick Chang is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Patrick Chang located?
- Patrick Chang's practice location on file with NPPES is 10785 S Saginaw St Ste D, Grand Blanc, MI 48439-7003.
- What is Patrick Chang's phone number?
- The practice phone number listed in the NPPES registry for Patrick Chang is (810) 695-6337.
- Does Patrick Chang accept Medicare?
- Patrick Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Patrick Chang's NPI active?
- Yes — Patrick Chang's NPI (1912009705) is active in the NPPES registry as of the last update on 2025-12-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.