Active NPI
Clarissa Michalak, ACNP-AG
- Critical Care Medicine Nurse Practitioner
- Burlington, MA
National Provider Identifier
1346618394
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Critical Care Medicine Nurse Practitioner
- License
- RN2291327
- Practice address
- 41 Mall Rd
Burlington, MA 01805-0001 - Phone
- (781) 744-8000
- NPI assigned
- Sep 8, 2015
- 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 4
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Gerontology Nurse Practitioner | 363LG0600X | CNP201245 | ME | |
| Acute Care Nurse Practitioner | 363LA2100X | RN2291327 | MA | |
| Critical Care Medicine Nurse Practitioner | 363LC0200X | RN2291327 | MA | Primary |
| Acute Care Nurse Practitioner | 363LA2100X | 430958 | NY |
Addresses
Primary practice location
41 Mall Rd
Burlington, MA 01805-0001
Mailing address
41 Mall Rd
Burlington, MA 01805-0001
Phone (781) 744-8000
Other practice location 1
31 Shady Run Ln
Cumberland, ME 04021-3818
Phone (207) 409-3623
Other practice location 2
1 Medical Center Dr
Biddeford, ME 04005-9422
Phone (207) 283-7000
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in NY, ME, NH
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: No
Enrollment records 3
Care Compare profile
Medicare Care Compare- Specialty
- Nurse Practitioner
- Education
- Other, 2012
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
1 Medical Ctr Dr
Biddeford, ME 04005-9422
Phone (207) 282-4270
15 Hospital Dr
York, ME 03909-1011
Phone (207) 363-4321
22 Bramhall St
Portland, ME 04102-3134
Phone (207) 885-9905
Hospital & facility affiliations
Merit-based Incentive Payment System (MIPS)
- Final score
- 97.93 of 100
- Quality
- 83.31
- Promoting interoperability
- 100
- Improvement activities
- 40
Merit-based Incentive Payment System (MIPS)
- Final score
- 97.93 of 100
- Quality
- 83.31
- Promoting interoperability
- 100
- Improvement activities
- 40
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Nurse Practitioner
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 430958 | NY | MD | Acute Care Nurse Practitioner |
| CNP201245 | ME | MD | Gerontology Nurse Practitioner |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| New York University | Current | Accepting new patients | |
| Mainehealth | Current | Accepting new patients | |
| Mainehealth | Current | Accepting new patients | |
| Mainehealth | Current | Accepting new patients | |
| York Hospital | Current | Accepting new patients | |
| Martha'S Vineyard Hospital | Current | Accepting new patients | |
| New York University | Current | Accepting new patients |
Locations
1 Medical Dr
Biddeford, ME 04005
Phone (207) 283-7000
22 Bramhall St
Portland, ME 04102
Phone (207) 662-2179
15 Hospital Dr
York, ME 03909
Phone (207) 351-2478
14 Wall St
Fl 9
Wall Street, NY 10005
Phone (646) 501-3224
Interoperability endpoints
- cmichalak306461@direct.mmc.mainehealth.org
- michalak.clarissa.mvh@direct.partners.masshiway.net
Organizations & group practices 7
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.
-
- Psychiatric Hospital
- Westbrook, ME
- NPI 1790265502
-
- General Acute Care Hospital
- York, ME
- NPI 1376528398
-
- Obstetrics & Gynecology Physician
- Oak Bluffs, MA
- NPI 1962465500
-
- Community/Retail Pharmacy
- Portland, ME
- NPI 1013868181
-
- Multi-Specialty Clinic/Center
- Biddeford, ME
- NPI 1215417019
-
- Physical Medicine & Rehabilitation Physician
- Boynton Beach, FL
- NPI 1104787613
Hospital & facility affiliations 37
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Scarborough, ME
- NPI 1053647024
-
- General Acute Care Hospital
- Portland, ME
- NPI 1346267879
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1441670400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1786924800000",
"number": "1346618394",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "41 MALL RD",
"city": "BURLINGTON",
"state": "MA",
"postal_code": "018050001",
"telephone_number": "781-744-8000"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "41 MALL RD",
"city": "BURLINGTON",
"state": "MA",
"postal_code": "018050001",
"telephone_number": "781-744-8000"
}
],
"practiceLocations": [
{
"address_1": "31 Shady Run Ln",
"address_purpose": "LOCATION",
"city": "Cumberland",
"state": "ME",
"postal_code": "040213818",
"country_code": "US",
"telephone_number": "207-409-3623",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "1 Medical Center Dr",
"address_purpose": "LOCATION",
"city": "Biddeford",
"state": "ME",
"postal_code": "040059422",
"country_code": "US",
"telephone_number": "207-283-7000",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "MICHALAK",
"first_name": "CLARISSA",
"name_prefix": "Dr.",
"credential": "ACNP-AG",
"sole_proprietor": "YES",
"sex": "F",
"enumeration_date": "2015-09-08",
"last_updated": "2026-08-17",
"certification_date": "2026-08-17",
"status": "A"
},
"taxonomies": [
{
"code": "363LG0600X",
"taxonomy_group": "",
"desc": "Nurse Practitioner, Gerontology",
"state": "ME",
"license": "CNP201245",
"primary": false
},
{
"code": "363LA2100X",
"taxonomy_group": "",
"desc": "Nurse Practitioner, Acute Care",
"state": "MA",
"license": "RN2291327",
"primary": false
},
{
"code": "363LC0200X",
"taxonomy_group": "",
"desc": "Nurse Practitioner, Critical Care Medicine",
"state": "MA",
"license": "RN2291327",
"primary": true
},
{
"code": "363LA2100X",
"taxonomy_group": "",
"desc": "Nurse Practitioner, Acute Care",
"state": "NY",
"license": "430958",
"primary": false
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Burlington, MA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 17, 2026; 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.