Active NPI
Angela Ann Williamson, CRNA
- Certified Registered Nurse Anesthetist
- Saginaw, MI
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Certified Registered Nurse Anesthetist
- License
- 4704232882
- Practice address
- 1447 N Harrison St
Saginaw, MI 48602-4727 - Phone
- (989) 583-6237
- Fax
- (989) 583-6032
- NPI assigned
- Jan 12, 2011
- Sex
- Female
- Sole proprietor
- No
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 |
|---|---|---|---|---|
| Certified Registered Nurse Anesthetist | 367500000X | APRN11044540 | FL | |
| Certified Registered Nurse Anesthetist | 367500000X | 4704232882 | MI | Primary |
Addresses
Primary practice location
1447 N Harrison St
Saginaw, MI 48602-4727
Mailing address
1447 N Harrison St
Saginaw, MI 48602-4727
Phone (989) 583-6237
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in MI, SC, FL
Enrollment records 3
Care Compare profile
Medicare Care Compare- Specialty
- Certified Registered Nurse Anesthetist (Crna)
- Education
- Other, 2010
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
1501 W Chisholm St
Alpena, MI 49707-1401
Phone (989) 356-7390
4000 Wellness Dr
Midland, MI 48670-2000
Phone (989) 839-3000
700 Cooper Ave
Saginaw, MI 48602-5383
Phone (989) 791-0452
9981 S Healthpark Dr
Fort Myers, FL 33908-3618
Phone (394) 337-7992
Hospital & facility affiliations
- Mymichigan Medical Center Midland
- Lee Memorial Hospital
- Mymichigan Medical Center Alpena
- Cape Coral Hospital
- Covenant Medical Center
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| APRN11044540 | FL | MD | Certified Registered Nurse Anesthetist |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Joseph a. Houle MD PC | Current | Accepting new patients | |
| Medical University Hospital Authority | Current | Accepting new patients | |
| Mymichigan Medical Center Alpena | Current | Accepting new patients | |
| US Anesthesia Partners of Florida Inc. | Nurse Anesthetist, Certified Registered | Current | Accepting new patients |
| Mymichigan Medical Center Alpena | Nurse Anesthetist, Certified Registered | Current | Accepting new patients |
| Mymichigan Medical Center Midland | Current | Accepting new patients | |
| Mymichigan Medical Center Alpena | Current | Accepting new patients | |
| Medical University Hospital Authority | Nurse Anesthetist, Certified Registered | Current | Accepting new patients |
| Covenant Medical Center, Inc. | Nurse Anesthetist, Certified Registered | Current | Accepting new patients |
| Mymichigan Medical Center Midland | Nurse Anesthetist, Certified Registered | Current | Accepting new patients |
| Covenant Medical Center, Inc | Current | Accepting new patients |
Locations
9981 S Healthpark Dr
Fort Myers, FL 33908
Phone (239) 332-5344
851 Trafalgar Ct
Ste 200E
Maitland, FL 32751
Phone (321) 422-7155
1501 W Chisholm St
Alpena, MI 49707
Phone (989) 356-7000
4000 Wellness Dr
Midland, MI 48670
Phone (844) 832-1956
700 Cooper Ave
Saginaw, MI 48602
Phone (989) 583-6000
1447 N Harrison St
Saginaw, MI 48602
Phone (989) 583-4220
L4355
Columbus, OH 43260
171 Ashley Ave
Charleston, SC 29425
Phone (843) 792-2123
Organizations & group practices 11
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
-
- Certified Registered Nurse Anesthetist
- Saginaw, MI
- NPI 1225151897
Nurse Anesthetist, Certified Registered
-
- Certified Registered Nurse Anesthetist
- Alpena, MI
- NPI 1770667149
Nurse Anesthetist, Certified Registered
-
- Certified Registered Nurse Anesthetist
- Midland, MI
- NPI 1770668683
Nurse Anesthetist, Certified Registered
-
- Anesthesiology Physician
- Maitland, FL
- NPI 1518910520
Nurse Anesthetist, Certified Registered
-
- Certified Registered Nurse Anesthetist
- Charleston, SC
- NPI 1255305876
Nurse Anesthetist, Certified Registered
-
- Family Medicine Physician
- Saginaw, MI
- NPI 1619412376
-
- Anatomic Pathology & Clinical Pathology Physician
- Alpena, MI
- NPI 1497734834
-
- Anesthesiology Physician
- Alpena, MI
- NPI 1467529404
-
- Internal Medicine Physician
- Alpena, MI
- NPI 1942302302
-
- Anesthesiology Physician
- Midland, MI
- NPI 1649010455
-
- Children's Rehabilitation Hospital
- Charleston, SC
- NPI 1659101277
Hospital & facility affiliations 9
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Saginaw, MI
- NPI 1588656946
-
- Rural Acute Care Hospital
- Sault Sainte Marie, MI
- NPI 1619791431
-
- Rural Acute Care Hospital
- Alpena, MI
- NPI 1619914652
-
- General Acute Care Hospital
- Midland, MI
- NPI 1376973149
-
- General Acute Care Hospital
- Midland, MI
- NPI 1902841414
-
- General Acute Care Hospital
- Fort Myers, FL
- NPI 1427806025
-
- General Acute Care Hospital
- Cape Coral, FL
- NPI 1780429076
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1294790400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1772582400000",
"number": "1659676286",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1447 N HARRISON ST",
"city": "SAGINAW",
"state": "MI",
"postal_code": "486024727",
"telephone_number": "989-583-6237",
"fax_number": "989-583-6032"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1447 N HARRISON ST",
"city": "SAGINAW",
"state": "MI",
"postal_code": "486024727",
"telephone_number": "989-583-6237",
"fax_number": "989-583-6032"
}
],
"practiceLocations": [],
"basic": {
"last_name": "WILLIAMSON",
"first_name": "ANGELA",
"middle_name": "ANN",
"credential": "CRNA",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2011-01-12",
"last_updated": "2026-03-04",
"certification_date": "2026-03-04",
"status": "A"
},
"taxonomies": [
{
"code": "367500000X",
"taxonomy_group": "",
"desc": "Nurse Anesthetist, Certified Registered",
"state": "FL",
"license": "APRN11044540",
"primary": false
},
{
"code": "367500000X",
"taxonomy_group": "",
"desc": "Nurse Anesthetist, Certified Registered",
"state": "MI",
"license": "4704232882",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Saginaw, MI
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 4, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.