NPI registry status
Active
2026 NPPES data Gastroenterology Physician NPI 1134582208 MD
Verify on CMS → John Haydek, MD
Gastroenterology Physician in Chapel Hill, North Carolina.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 17,061 in Gastroenterology Physician, 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.
Prescribing volume
267
Medicare Part D claims · 61 beneficiaries · Gastroenterology Physician avg: 848
What the federal data shows
John Haydek, MD filed 267 Medicare Part D claims in 2024 as a Gastroenterology Physician in Chapel Hill, North Carolina.
- 267
- Part D claims, 2024
- Likely
- board-certified (heuristic)
- ≥48th
- pct by Part D claim volume (lower-bound band)
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 Haydek, MD
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1134582208), first enumerated 04/05/2016.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 267 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
3 CMS Care Compare hospital affiliations on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- 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 1134582208 · Gastroenterology Physician
NPI-10 · ENUM-MID · TAX-MID · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1134582208
- ENUM-MID 2016
- TAX-MID 17K Gastroenterology Physician
- RX-LIGHT 267
- BOOK-LIGHT 539 in North Carolina
- PHOTO-ENUM Isaac Perry · 2016
John Haydek, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
267 ≥ 48th percentile 48% of 1,416,883 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
✓
Board certification likely (heuristic, not verified)
John Haydek, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 3 hospital affiliations - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about John Haydek, MD?
Quality data not reportedPrimary specialty
Gastroenterology Physician
Medicare Part D claims
267 69% vs specialty avg
Specialty distribution in North Carolina
How Gastroenterology Physician compares to other specialties among North Carolina 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 Gastroenterology Physician. 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 | 1134582208 |
|---|---|
| Specialty | Gastroenterology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 04/05/2016 |
Hospital and facility affiliations
Facilities where John Haydek, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
According to CMS billing records, John Haydek, MD is affiliated with 3 Medicare-billing facilities.
North Carolina MG LLC
Raleigh, NC
Unc Physicians Network LLC
Goldsboro, NC
University OF North Carolina AT Chapel Hill
Chapel Hill, NC
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
267
Total Claims
$1.6M
Total Drug Cost
61
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 474.267
- Total Day Supply
- 13,421
- Generic Drug Cost
- $24K
- Antibiotic Claims
- 18
Patient Demographics
- Average Patient Age
- 65.0 years
- Avg HCC Risk Score
- 1.86
- Gender Split
- 67% female / 33% male
- Age Distribution
- <65: 23, 65-74: N/A, 75-84: 19, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What John Haydek, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Stelara
Stelara
39 claims
- Prednisone
Prednisone
24 claims
- Omeprazole
Omeprazole
18 claims
- Pantoprazole Sodium 15
Pantoprazole Sodium
15 claims
- Ondansetron Odt 13
Ondansetron Odt
13 claims
- Budesonide Dr 11
Budesonide Dr
11 claims
| Drug | Claims |
|---|---|
| Stelara Ustekinumab | 39 |
| Prednisone | 24 |
| Omeprazole | 18 |
| Pantoprazole Sodium | 15 |
| Ondansetron Odt Ondansetron | 13 |
| Budesonide Dr Budesonide | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Gastroenterology Physician Overview
How John Haydek, MD fits within the Gastroenterology Physician landscape nationally.
17,061
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
848
Avg Claims per Provider
John Haydek, MD's 267 claims are below the specialty average of 848.
Nationwide Gastroenterology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Haydek, both outside North Carolina so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2016)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Gastroenterology Physician Providers in North Carolina
Other clinicians with the same primary specialty enrolled in North Carolina, drawn from the same CMS NPPES roster as Haydek.
One of 539 Gastroenterology Physician providers enrolled in North Carolina, 5 are shown here.
Dr. Manal Abdelmalek
MD
Durham, NC
Dr. Sonia Abichandani
M.D.
Cary, NC
Dr. Sabeen Abid
M.D
Greenville, NC
Dr. Kendral Adkisson
MD
Asheville, NC
Dr. Vipul Aggarwal
M.D.
Winston Salem, NC
Compare Gastroenterology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is John Haydek, MD's specialty? ▼
John Haydek, MD specializes in Gastroenterology Physician and practices in Chapel Hill, North Carolina. Credentials: MD.
How much does John Haydek, MD prescribe under Medicare Part D? ▼
In 2024, John Haydek, MD wrote 267 Medicare Part D claims totaling $1.6M in drug costs for 61 beneficiaries.
Where is John Haydek, MD located? ▼
John Haydek, MD is located at 100 MANNING DR, Chapel Hill, NC, 27599. Phone: (720) 848-0000.
What is John Haydek, MD's NPI number? ▼
John Haydek, MD's National Provider Identifier (NPI) is 1134582208, issued on 04/05/2016.
How many Gastroenterology Physician providers are there in the US? ▼
There are 17,061 Gastroenterology Physician providers across 54 states in the US. The average Gastroenterology Physician provider writes 848 Medicare Part D claims per year.
What drugs does John Haydek, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, John Haydek, MD's most frequently prescribed drugs include Stelara, Prednisone, Omeprazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does John Haydek, MD accept Medicare? ▼
John Haydek, MD appears in CMS Medicare data with 267 Part D claims and 61 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Haydek, MD's credentials? ▼
John Haydek, MD's NPI is 1134582208 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.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- 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.