NPPES file of Aug 9, 2026

Hal Blumenfeld, MD

Neurology Physician · New Haven, CT

Hal Blumenfeld, MD is a neurology physician with a practice address in New Haven, Connecticut, and NPI 1982687109, issued on Nov 22, 2005. Check the license (Connecticut 035219, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1982687109
Name
Hal Blumenfeld
Credential
MD
Primary taxonomy
Neurology Physician 2084N0400X
License number
035219 CT
Self-reported in NPPES; status is on the state search
Practice location
40 Temple St, New Haven, CT 06510
Phone
(203) 785-4085
Enumerated
Nov 22, 2005
Record last updated
May 22, 2008 (not updated in 18 years: call before relying on the address or phone)
Fax
(203) 737-1597
Medicaid ID
001352195 CT
Medicare enrollment
Enrolled (PECOS I20100604000087); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 40 Temple St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Kirsten AckermanRegistered Dietitian1396298485
  2. Badr Al Bawardy, MDGastroenterology Physician1104111509
  3. Yonca Arat, MDOphthalmic Plastic and Reconstructive Surgery Physician1861646986
  4. Harry Aslanian, MDGastroenterology Physician1295718401
  5. Ashley Beesley, FNPFamily Nurse Practitioner1629834585
  6. Jennifer Bennick, APRNFamily Nurse Practitioner1770886764

Verify Hal Blumenfeld in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersConnecticut Medical Examining Board
    Search for license 035219
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Connecticut license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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72% fewer Medicare Part D claims than the average neurology physician in 2024

385 Medicare Part D claims for 54 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D.

  1. Hal Blumenfeld385
  2. Specialty average1,370

Most prescribed

  1. Levetiracetam60 claims
  2. Clobazam43 claims
  3. Lacosamide42 claims
  4. Levetiracetam Er34 claims
  5. Lamotrigine30 claims
  6. Briviact22 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 practice group's MIPS final score for 2023 (Medicare payment program): 73.6 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score75.8
  2. Costout of 100 · 30%51.4
  3. Promoting interoperabilityout of 100 · 25%74.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $182.88

1 payment: food and beverage; the largest payer was Neuropace, Inc. The 10,858 providers of this specialty with any payment received $8,318.07 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Hal Blumenfeld$182.88
  2. Specialty average$8,318.07

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Yale UniversityNew Haven, CT

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Hal Blumenfeld among 345 neurology physician records in Connecticut

Hal Blumenfeld, MD is one of 345 neurology physician records with a practice address in Connecticut. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 89% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated1992 · median 2009 among the 216 with a school on file
  • Record last updated2008 · 49% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

121 neurology physician records list a practice address in New Haven

They are 121 of the 9,793 NPPES records with a practice address in New Haven, and 345 neurology physician records in Connecticut.

The 8 neurology physician records with the nearest ZIP codes

  1. Susan Arnold, MDNew Haven, CT 065101720040587
  2. David Hafler, MDNew Haven, CT 065101689602054
  3. Richard Mattson, MDNew Haven, CT 065101578536538
  4. Dhasakumar Navaratnam, MDNew Haven, CT 065101528041738
  5. Steven Novella, MDNew Haven, CT 065101518949254
  6. Huned Patwa, MDNew Haven, CT 065101588649792
  7. Ognen Petroff, MDNew Haven, CT 065101427030162
  8. Jana Preiningerova, MDNew Haven, CT 065101336121078

Common questions

What is Hal Blumenfeld, MD's NPI number?

Hal Blumenfeld, MD's National Provider Identifier (NPI) is 1982687109, issued on Nov 22, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Hal Blumenfeld, MD located?

The NPPES record lists a practice address at 40 Temple St, New Haven, CT, 06510. Phone: (203) 785-4085. Providers update this record themselves, so call before visiting.

How can I verify Hal Blumenfeld, MD's license?

NPPES lists Connecticut license number 035219, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Hal Blumenfeld, MD prescribe under Medicare Part D?

In 2024, Hal Blumenfeld, MD had 385 Medicare Part D claims for 54 beneficiaries; the average among neurology physician prescribers was 1,370. Part D covers Medicare prescriptions only.

What is Hal Blumenfeld, MD's MIPS final score?

The 2023 MIPS final score is 73.6 of 100, reported for the practice group. 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.