NPI registry status
Active
2026 NPPES data Specialist NPI 1215999784 MD
Verify on CMS → John Berger, MD
Specialist in Fair Lawn, New Jersey.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 69,567 in Specialist, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
What the federal data shows
John Berger, MD is a Specialist in Fair Lawn, New Jersey, listed in the federal CMS National Provider Identifier registry.
- #21
- Specialist rank among New Jersey specialties
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about John Berger, MD
Bare NPI registry listing — limited federal enrichment beyond basic enumeration. Verify all credentials with official sources.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1215999784), first enumerated 04/03/2006.
Source: CMS NPPES
- Not in federal data
Medicare Part D participation
No 2023 Medicare Part D prescribing volume appears in the CMS public file for this NPI (may reflect specialty, new enrollment, or non-prescribing role).
Source: CMS Part D Prescriber PUF
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1215999784 · Specialist
NPI-10 · ENUM-LEGACY · TAX-MEGA · RX-NONE · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1215999784
- ENUM-LEGACY 2006
- TAX-MEGA 70K Specialist
- RX-NONE No Part D
- BOOK-LIGHT 1,979 in New Jersey
- PHOTO-ENUM Kathleen Fitzgerald,… · 2006
What does the federal data show about John Berger, MD?
Quality data not reportedPrimary specialty
Specialist
Specialty distribution in New Jersey
How Specialist compares to other specialties among New Jersey providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Specialist. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1215999784 |
|---|---|
| Specialty | Specialist |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 04/03/2006 |
Specialist Overview
How John Berger, MD fits within the Specialist landscape nationally.
69,567
Specialist Providers in US
55
States with Specialist
1,524
Avg Claims per Provider
Nationwide Specialist peers with similar MIPS or enrollment year
Two federal-record peer sets for Berger, both outside New Jersey so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Specialist Providers in New Jersey
Other clinicians with the same primary specialty enrolled in New Jersey, drawn from the same CMS NPPES roster as Berger.
One of 1,979 Specialist providers enrolled in New Jersey, 5 are shown here.
Lisa Abate
Hainesport, NJ
Dr. Ziad Abbud
MD
Neptune, NJ
Dr. Yaakov Abdelhak
M.D.
Hackensack, NJ
Aliyah Abdullah-Griffin
Carteret, NJ
Vanjelo Abellar
RPT
Carteret, NJ
Compare Specialist nationally: see state-by-state distribution →
Frequently Asked Questions
What is John Berger, MD's specialty? ▼
John Berger, MD specializes in Specialist and practices in Fair Lawn, New Jersey. Credentials: MD.
Where is John Berger, MD located? ▼
John Berger, MD is located at 15-01 BROADWAY, Fair Lawn, NJ, 07410. Phone: (201) 794-6008.
What is John Berger, MD's NPI number? ▼
John Berger, MD's National Provider Identifier (NPI) is 1215999784, issued on 04/03/2006.
How many Specialist providers are there in the US? ▼
There are 69,567 Specialist providers across 55 states in the US. The average Specialist provider writes 1,524 Medicare Part D claims per year.
Does John Berger, MD accept Medicare? ▼
John Berger, MD appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Berger, MD's credentials? ▼
John Berger, MD's NPI is 1215999784 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.