JEFFREY K CHAULK MD PC
JEFFREY K CHAULK MD PC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1215065727, based in Gaylord, MI. The organization lists 2 taxonomy classifications, with Ophthalmology Physician recorded as primary.
Getting there
The practice address on file is 350 W NORTH ST, Gaylord, MI 49735. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 4301405077 | MI | Ophthalmology Physician primary |
| 4901003939 | MI | Optometrist |
| 5101016992 | MI | Ophthalmology Physician |
| 4901004074 | MI | Optometrist |
This provider holds licence 4301405077 issued in MI. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Part B Supplier - Clinic/group Practice
- PAC ID
- 6305947458
Medicare enrolment is recorded as approved under the provider type Part B Supplier - Clinic/group Practice. This means the provider is enrolled to bill Medicare, though it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Ophthalmology covers
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses. NUCC Health Care Provider Taxonomy, code 207W00000X
All registered taxonomy codes
This provider registers 4 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207W00000X | Ophthalmology Physician | 4301405077 | MI | primary |
| 152W00000X | Optometrist | 4901003939 | MI | |
| 207W00000X | Ophthalmology Physician | 5101016992 | MI | |
| 152W00000X | Optometrist | 4901004074 | MI |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1215065727 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Feb 28, 2007 |
| Last updated | Jul 20, 2010 |
| Status | Active |
| Practice address |
350 W NORTH ST Gaylord, MI 49735 (989) 732-6455 Fax (989) 732-1102 |
| Mailing address |
PO BOX 1665 Gaylord, MI 49734 |
| Other identifiers |
180F910770
· BCBS OD (MI) 1806920011 · BLUE CARE NETWORK (MI) 3038315 (MI) 180F910760 · BCBS MD (MI) CJ0562 · RAILROAD MEDICARE (MI) 900F910770 · BLUE CARE NETWORK (MI) 900F910770 · BCBS (MI) 1806920011 · BCBS (MI) |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 2 | 1 | 5 | 0 | 6 | 5 | 7 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 2 | 2 | 5 | 0 | 6 | 1 | 7 | 4 |
Sum = 53 · next multiple of 10 = 60 · check digit = 7 · actual last digit = 7
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.