Active NPI
Christine M. Fitzgibbons, M.D.
- Sleep Medicine (Internal Medicine) Physician
- Westborough, MA
National Provider Identifier
1194771220
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Sleep Medicine (Internal Medicine) Physician
- License
- 224279
- Practice address
- 154 E Main St
Westborough, MA 01581-1768 - Phone
- (508) 366-1120
- NPI assigned
- May 26, 2006
- 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 4
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Internal Medicine Physician | 207R00000X | 224279 | MA | |
| Critical Care Medicine (Internal Medicine) Physician | 207RC0200X | 224279 | MA | |
| Pulmonary Disease Physician | 207RP1001X | 224279 | MA | |
| Sleep Medicine (Internal Medicine) Physician | 207RS0012X | 224279 | MA | Primary |
Addresses
Primary practice location
154 E Main St
Westborough, MA 01581-1768
Mailing address
PO Box 415348
Boston, MA 02241-5348
Phone (800) 225-8885
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 110040892A | Medicaid | MA |
Other names 1
- Christine M. O'Brien
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in MA
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Pulmonary Disease
- Education
- Boston University School of Medicine, 2002
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Telehealth
- Offers telehealth services
- Group practices
Practice addresses (Care Compare)
55 Lake Ave N
Worcester, MA 01655-0002
Phone (508) 334-1000
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 224279 | MA | MD | Internal Medicine Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Rehabilitation Medical Associates, P.C. | Internal Medicine | Past | Accepting new patients |
| Coastal Medical Associates | Past | Accepting new patients |
Organizations & group practices 3
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.
-
- Internal Medicine Physician
- Worcester, MA
- NPI 1760445373
-
- Anesthesiology Physician
- Weymouth, MA
- NPI 1932175684
-
- Internal Medicine Physician
- Braintree, MA
- NPI 1235183955
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1148601600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1755043200000",
"number": "1194771220",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "PO BOX 415348",
"city": "BOSTON",
"state": "MA",
"postal_code": "022415348",
"telephone_number": "800-225-8885"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "154 E MAIN ST",
"city": "WESTBOROUGH",
"state": "MA",
"postal_code": "015811768",
"telephone_number": "508-366-1120"
}
],
"practiceLocations": [],
"basic": {
"last_name": "FITZGIBBONS",
"first_name": "CHRISTINE",
"middle_name": "M.",
"credential": "M.D.",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2006-05-26",
"last_updated": "2025-08-13",
"certification_date": "2025-08-13",
"status": "A"
},
"taxonomies": [
{
"code": "207R00000X",
"taxonomy_group": "",
"desc": "Internal Medicine",
"state": "MA",
"license": "224279",
"primary": false
},
{
"code": "207RC0200X",
"taxonomy_group": "",
"desc": "Internal Medicine, Critical Care Medicine",
"state": "MA",
"license": "224279",
"primary": false
},
{
"code": "207RP1001X",
"taxonomy_group": "",
"desc": "Internal Medicine, Pulmonary Disease",
"state": "MA",
"license": "224279",
"primary": false
},
{
"code": "207RS0012X",
"taxonomy_group": "",
"desc": "Internal Medicine, Sleep Medicine",
"state": "MA",
"license": "224279",
"primary": true
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "110040892A",
"state": "MA"
}
],
"endpoints": [],
"other_names": [
{
"first_name": "CHRISTINE",
"last_name": "O'BRIEN",
"middle_name": "M.",
"credential": "M.D.",
"code": "1",
"type": "Former Name"
}
]
}
Other providers in Westborough, MA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 13, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- 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.