Mariana Nidal Hattar, MD
Internal Medicine Physician · Boston, MA
Mariana Nidal Hattar, MD is an internal medicine physician with a practice address in Boston, Massachusetts, and NPI 1437880986, issued on Jun 23, 2022. Check the license (Massachusetts FS2328222-023, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Mariana Nidal Hattar
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- FS2328222-023 MA
Self-reported in NPPES; status is on the state search - Practice location
- 736 Cambridge St, Boston, MA 02135
- Phone
- (617) 789-2386
- Enumerated
- Jun 23, 2022
- Record last updated
- Jun 23, 2022
- Entity
- Type 1 · individual
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Verify Mariana Nidal Hattar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license FS2328222-023Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average internal medicine physician in 2024
113 Medicare Part D claims for 33 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Pantoprazole Sodium21 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.
Mariana Nidal Hattar among 6,825 internal medicine physician records in Massachusetts
Mariana Nidal Hattar, MD is one of 6,825 internal medicine physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 92% of them.
- NPI issued2022 · 92% of these records are older, 5% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2022 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2,320 internal medicine physician records list a practice address in Boston
They are 2,320 of the 41,865 NPPES records with a practice address in Boston, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Boston → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Brian Ash, M.D.Brighton, MA 021351033180385
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- Lubov Kaplun, M.D.Brighton, MA 021351841247590
- Bilal Kaskar, MDBrighton, MA 021351265478440
- Sheila Macdonnell, M.D.Brighton, MA 021351245227958
- Ida Minevich, MDBrighton, MA 021351891780367
Common questions
What is Mariana Nidal Hattar, MD's NPI number?
Mariana Nidal Hattar, MD's National Provider Identifier (NPI) is 1437880986, issued on Jun 23, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Mariana Nidal Hattar, MD located?
The NPPES record lists a practice address at 736 Cambridge St, Boston, MA, 02135. Phone: (617) 789-2386. Providers update this record themselves, so call before visiting.
How can I verify Mariana Nidal Hattar, MD's license?
NPPES lists Massachusetts license number FS2328222-023, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mariana Nidal Hattar, MD prescribe under Medicare Part D?
In 2024, Mariana Nidal Hattar, MD had 113 Medicare Part D claims for 33 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.