Ansar Hassan, MD
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Portland, ME
Ansar Hassan, MD is a thoracic surgery (cardiothoracic vascular surgery) physician with a practice address in Portland, Maine, and NPI 1689859332, issued on Dec 31, 2007. Check the license (Maine MD24930, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- Ansar Hassan
- Credential
- MD
- Primary taxonomy
- Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician 208G00000X
- License number
- MD24930 ME
Self-reported in NPPES; status is on the state search - Practice location
- 818 Congress St, Portland, ME 04102
- Phone
- (207) 773-8161
- Enumerated
- Dec 31, 2007
- Record last updated
- Jul 1, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (207) 773-1489
- Medicare enrollment
- Enrolled (PECOS I20210927001160); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest thoracic surgery (cardiothoracic vascular surgery) physician records → All 25 in Maine → Look up another NPI →
Also registered at 818 Congress St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lawrence Adrian, P.A.-CSurgical Physician Assistant1891707493
- Ziyad Binsalamah, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1164843207
- Melissa Blier, PA-CSurgical Physician Assistant1528137726
- Scott Buchanan, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1932154135
- Lindsey Chorney, AGACNPAcute Care Nurse Practitioner1386077873
- Justin Claire, PA-CSurgical Physician Assistant1043746944
Verify Ansar Hassan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license MD24930Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
67% more Medicare Part D claims than the average thoracic surgery (cardiothoracic vascular surgery) physician in 2024
169 Medicare Part D claims for 62 beneficiaries, against an average of 101 among the 2,587 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Mupirocin60 claims
- Chlorhexidine Gluconate57 claims
- Amiodarone Hcl50 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 98.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $589.30
5 payments; by number, the most common kind was food and beverage; the largest payer was Edwards Lifesciences Corporation. The 4,047 providers of this specialty with any payment received $7,828.84 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
2 hospitals and group practices
- Central Maine Medical CenterLewiston, ME · Acute Care Hospitals4 of 5 stars
- MainehealthPortland, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Ansar Hassan among 25 thoracic surgery (cardiothoracic vascular surgery) physician records in Maine
Ansar Hassan, MD is one of 25 thoracic surgery (cardiothoracic vascular surgery) physician records with a practice address in Maine. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 44% of them.
- NPI issued2007 · 44% of these records are older, 52% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1998 · median 1999 among the 16 with a school on file
- Record last updated2021 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208G00000X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician providers in Maine
There are 25 thoracic surgery (cardiothoracic vascular surgery) physician records in Maine.
All 25 in Maine → Every provider in Portland → Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician nationwide →
The 8 thoracic surgery (cardiothoracic vascular surgery) physician records with the nearest ZIP codes
- Ziyad Binsalamah, M.D.Portland, ME 041021164843207
- Scott Buchanan, M.D.Portland, ME 041021932154135
- Walter Denino, MDPortland, ME 041021114238755
- Jennifer Kole, PA-CPortland, ME 041021841713633
- Robert Kramer, MDPortland, ME 041021215036900
- Jeremy Morton, M.D.Portland, ME 041021851692974
- Adam Paine, M.D.Portland, ME 041021770977225
- Cristian Rosu, MDPortland, ME 041021548665623
Common questions
What is Ansar Hassan, MD's NPI number?
Ansar Hassan, MD's National Provider Identifier (NPI) is 1689859332, issued on Dec 31, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ansar Hassan, MD located?
The NPPES record lists a practice address at 818 Congress St, Portland, ME, 04102. Phone: (207) 773-8161. Providers update this record themselves, so call before visiting.
How can I verify Ansar Hassan, MD's license?
NPPES lists Maine license number MD24930, as entered by the provider. Search the Maine Board of Licensure in Medicine at https://www.maine.gov/md/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ansar Hassan, MD prescribe under Medicare Part D?
In 2024, Ansar Hassan, MD had 169 Medicare Part D claims for 62 beneficiaries; the average among thoracic surgery (cardiothoracic vascular surgery) physician prescribers was 101. Part D covers Medicare prescriptions only.
What is Ansar Hassan, MD's MIPS final score?
The 2023 MIPS final score is 98.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.