NPPES file of Aug 9, 2026

Martin Blackwell, DO

Dermatology Physician · Hopatcong, NJ

Martin Blackwell, DO is a dermatology physician with a practice address in Hopatcong, New Jersey, and NPI 1356330534, issued on Oct 19, 2005. Check the license (New Jersey 25MB05321100, 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
1356330534
Name
Martin Blackwell
Credential
DO
Primary taxonomy
Dermatology Physician 207N00000X
License number
25MB05321100 NJ
Self-reported in NPPES; status is on the state search
Practice location
109 Maxim Dr, Hopatcong, NJ 07843
Phone
(973) 222-2719
Enumerated
Oct 19, 2005
Record last updated
May 9, 2025
Medicare enrollment
Enrolled (PECOS I20240625003481); accepts Medicare assignment
Medical or professional school
Rowan University School Of Osteopathic Medicine, 1988
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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Verify Martin Blackwell 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 25MB05321100
    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

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91% fewer Medicare Part D claims than the average dermatology physician in 2024

72 Medicare Part D claims for 53 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D.

  1. Martin Blackwell72
  2. Specialty average797

Most prescribed

  1. Triamcinolone Acetonide17 claims
  2. Clobetasol Propionate14 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: $347.83

7 payments; by number, the most common kind was food and beverage; the largest payer was Genzyme Corporation. The 10,250 providers of this specialty with any payment received $8,544.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Martin Blackwell$347.83
  2. Specialty average$8,544.61

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

Martin Blackwell among 421 dermatology physician records in New Jersey

Martin Blackwell, DO is one of 421 dermatology physician records with a practice address in New Jersey. 86% 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, 92% newer
  • In a Medicare fileYes · 86% of these records are
  • In the CMS Doctors and Clinicians fileYes · 74% of these records are
  • Graduated1988 · median 2001 among the 312 with a school on file
  • Record last updated2025 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

1 dermatology physician record lists a practice address in Hopatcong

They are 1 of the 39 NPPES records with a practice address in Hopatcong, and 421 dermatology physician records in New Jersey.

The 8 dermatology physician records with the nearest ZIP codes

  1. Elizabeth Botham, M.D.Hackettstown, NJ 078401669732467
  2. Claudia Hossain, M.D.Hackettstown, NJ 078401740634849
  3. Stephen Nervi, MDHackettstown, NJ 078401487859104
  4. Nicole Rocca, MDHackettstown, NJ 078401841408796
  5. Winston Moy, MDDenville, NJ 078341225196314
  6. Nancy Spinelli, D.O.Denville, NJ 078341376555847
  7. Timothy Blackwell, DONewton, NJ 078601699356782
  8. Jerome Kesselman, M.D.Fredon, NJ 078601760535769

Common questions

What is Martin Blackwell, DO's NPI number?

Martin Blackwell, DO's National Provider Identifier (NPI) is 1356330534, issued on Oct 19, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Martin Blackwell, DO located?

The NPPES record lists a practice address at 109 Maxim Dr, Hopatcong, NJ, 07843. Phone: (973) 222-2719. Providers update this record themselves, so call before visiting.

How can I verify Martin Blackwell, DO's license?

NPPES lists New Jersey license number 25MB05321100, 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 Martin Blackwell, DO prescribe under Medicare Part D?

In 2024, Martin Blackwell, DO had 72 Medicare Part D claims for 53 beneficiaries; the average among dermatology physician prescribers was 797. 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.