NPPES file of Aug 9, 2026

Darren Reich Blumberg, M.D.

Gastroenterology Physician · Florham Park, NJ

Darren Reich Blumberg, M.D. is a gastroenterology physician with a practice address in Florham Park, New Jersey, and NPI 1902813272, issued on Aug 1, 2006. Check the license (New Jersey 25MA06961100, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1902813272
Name
Darren Reich Blumberg
Credential
M.D.
Primary taxonomy
Gastroenterology Physician 207RG0100X
License numbers
25MA06961100 NJ
MA06961100 NJ
Self-reported in NPPES; status is on the state search
Practice location
140 Park Ave, Florham Park, NJ 07932
Phone
(973) 401-0500
Enumerated
Aug 1, 2006
Record last updated
Oct 30, 2017 (not updated in 9 years: call before relying on the address or phone)
Fax
(973) 401-9306
Medicare enrollment
Enrolled (PECOS I20040512001167); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
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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8 nearest gastroenterology physician records → All 735 in New Jersey → Look up another NPI →

Also registered at 140 Park Ave

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

  1. Stephanie Adam, DOOrthopaedic Surgery Physician1447459292
  2. Noeen Ahmad, D.O.Pulmonary Disease Physician1023391950
  3. Matthew Amarante, M.D.Neurological Surgery Physician1811230089
  4. Olabisi Asimolowo, M.D.Pain Medicine Physician1871768929
  5. Karen BaddouraAnesthesiology Physician1467080937
  6. Zubin Bamboat, MDSurgical Oncology Physician1891821567

Verify Darren Reich Blumberg in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
    Search for license 25MA06961100    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 New Jersey 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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3.2 times the Medicare Part D claims of the average gastroenterology physician in 2024

2,577 Medicare Part D claims for 738 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.

  1. Darren Blumberg2,577
  2. Specialty average811

Most prescribed

  1. Pantoprazole Sodium811 claims
  2. Sutab271 claims
  3. Famotidine211 claims
  4. Omeprazole156 claims
  5. Mesalamine132 claims
  6. Linzess123 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.

Industry payments in 2024: $1,637.13

101 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Darren Blumberg$1,637.13
  2. Specialty average$5,015.95

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. Summit Medical Group PABerkeley Heights, NJ

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

Darren Reich Blumberg among 735 gastroenterology physician records in New Jersey

Darren Reich Blumberg, M.D. is one of 735 gastroenterology physician records with a practice address in New Jersey. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 12% of them.

  • NPI issued2006 · 12% of these records are older, 44% newer
  • In a Medicare fileYes · 89% of these records are
  • In the CMS Doctors and Clinicians fileYes · 77% of these records are
  • Graduated1992 · median 2000 among the 564 with a school on file
  • Record last updated2017 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

7 gastroenterology physician records list a practice address in Florham Park

They are 7 of the 701 NPPES records with a practice address in Florham Park, and 735 gastroenterology physician records in New Jersey.

All 735 in New Jersey → Every provider in Florham Park → Gastroenterology Physician nationwide →

The 8 gastroenterology physician records with the nearest ZIP codes

  1. Konika Bose, MDFlorham Park, NJ 079321336470228
  2. John Dalena, M.D.Florham Park, NJ 079321215944582
  3. Isaac Galandauer, M.D.Florham Park, NJ 079321356543276
  4. Dennis Han, M.D.Florham Park, NJ 079321881956050
  5. Kelly Krueger, M.D.Florham Park, NJ 079321861663528
  6. Kanaga Sundaram, MDFlorham Park, NJ 079321922151935
  7. John Franzese, M.D.Chatham, NJ 079281053390104
  8. Adam Barrison, MDBerkeley Heights, NJ 079221669473328

Common questions

What is Darren Reich Blumberg, M.D.'s NPI number?

Darren Reich Blumberg, M.D.'s National Provider Identifier (NPI) is 1902813272, issued on Aug 1, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Darren Reich Blumberg, M.D. located?

The NPPES record lists a practice address at 140 Park Ave, Florham Park, NJ, 07932. Phone: (973) 401-0500. Providers update this record themselves, so call before visiting.

How can I verify Darren Reich Blumberg, M.D.'s license?

NPPES lists New Jersey license number 25MA06961100, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Darren Reich Blumberg, M.D. prescribe under Medicare Part D?

In 2024, Darren Reich Blumberg, M.D. had 2,577 Medicare Part D claims for 738 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.