Active NPI
Mary Ellen Jachec, M.D.
- Hospitalist Physician
- Ann Arbor, MI
National Provider Identifier
1104037324
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Hospitalist Physician
- License
- 4301405999
- Practice address
- 1675 Weatherstone Dr
Ann Arbor, MI 48108-3359 - Phone
- (734) 669-0986
- NPI assigned
- May 28, 2007
- Sex
- Female
- Sole proprietor
- Yes
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Internal Medicine Physician | 207R00000X | 4301405999 | MI | |
| Hospitalist Physician | 208M00000X | 4301405999 | MI | Primary |
Addresses
Primary practice location
1675 Weatherstone Dr
Ann Arbor, MI 48108-3359
Mailing address
1675 Weatherstone Dr
Ann Arbor, MI 48108-3359
Phone (734) 669-0986
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 4301405999 | MI | MD | Hospitalist Physician |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1180310400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1757548800000",
"number": "1104037324",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1675 WEATHERSTONE DR",
"city": "ANN ARBOR",
"state": "MI",
"postal_code": "481083359",
"telephone_number": "734-669-0986"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1675 WEATHERSTONE DR",
"city": "ANN ARBOR",
"state": "MI",
"postal_code": "481083359",
"telephone_number": "734-669-0986"
}
],
"practiceLocations": [],
"basic": {
"last_name": "JACHEC",
"first_name": "MARY",
"middle_name": "ELLEN",
"name_prefix": "Dr.",
"credential": "M.D.",
"sole_proprietor": "YES",
"sex": "F",
"enumeration_date": "2007-05-28",
"last_updated": "2025-09-11",
"status": "A"
},
"taxonomies": [
{
"code": "207R00000X",
"taxonomy_group": "",
"desc": "Internal Medicine",
"state": "MI",
"license": "4301405999",
"primary": false
},
{
"code": "208M00000X",
"taxonomy_group": "",
"desc": "Hospitalist",
"state": "MI",
"license": "4301405999",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Ann Arbor, MI
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.