NPI registry status
Active
2026 NPPES data Pediatric Cardiology Physician NPI 1689692295 MD
Verify on CMS → Mark Hays, MD
Pediatric Cardiology Physician in Chattanooga, Tennessee.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 2,663 in Pediatric Cardiology 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
13
Medicare Part D claims · Pediatric Cardiology Physician avg: 93
Industry payments
$67.77
4 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Mark Hays, MD filed 13 Medicare Part D claims in 2024 as a Pediatric Cardiology Physician in Chattanooga, Tennessee.
- 13
- Part D claims, 2024
- $67.77
- industry payments (Sunshine Act)
- ≥0th
- 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 Mark Hays, 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 1689692295), first enumerated 07/18/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 13 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
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- Reported
Industry payment transparency
$67.77 in reported industry payments (4 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- 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 1689692295 · Pediatric Cardiology Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · RX-TRACE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1689692295
- ENUM-LEGACY 2006
- TAX-NARROW 2,663
- RX-TRACE 13
- BOOK-THIN 82 in Tennessee
- PHOTO-ENUM Robin Shaughnessy, MD · 2006
Mark Hays, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
13 ≥ 0th percentile 0% 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-eligible specialty (heuristic, not verified)
Mark Hays, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Mark Hays, MD?
Quality data not reportedPrimary specialty
Pediatric Cardiology Physician
Medicare Part D claims
13 86% vs specialty avg
Specialty distribution in Tennessee
How Pediatric Cardiology Physician compares to other specialties among Tennessee 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 Pediatric Cardiology 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 | 1689692295 |
|---|---|
| Specialty | Pediatric Cardiology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 07/18/2006 |
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Mark Hays, MD. Source: openpaymentsdata.cms.gov.
Total received
$68
Largest payer
Boston Scientific Corporation
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
13
Total Claims
$195
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 17
- Total Day Supply
- 386
- Brand Drug Cost
- $0
- Generic Drug Cost
- $195
Patient Demographics
- Average Patient Age
- 58.7 years
- Avg HCC Risk Score
- 1.48
Pediatric Cardiology Physician Overview
How Mark Hays, MD fits within the Pediatric Cardiology Physician landscape nationally.
2,663
Pediatric Cardiology Physician Providers in US
51
States with Pediatric Cardiology Physician
93
Avg Claims per Provider
Mark Hays, MD's 13 claims are below the specialty average of 93.
Nationwide Pediatric Cardiology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Hays, both outside Tennessee 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 Pediatric Cardiology Physician Providers in Tennessee
Other clinicians with the same primary specialty enrolled in Tennessee, drawn from the same CMS NPPES roster as Hays.
One of 82 Pediatric Cardiology Physician providers enrolled in Tennessee, 5 are shown here.
Dr. Mohammed Absi
M.D
Memphis, TN
Benjamin Acheampong
MBCHB
Nashville, TN
Dr. Hitesh Agrawal
M.D.
Memphis, TN
Dr. Bruce Alpert
MD
Memphis, TN
Dr. Nomisha Amin
MD
Memphis, TN
Compare Pediatric Cardiology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Mark Hays, MD's specialty? ▼
Mark Hays, MD specializes in Pediatric Cardiology Physician and practices in Chattanooga, Tennessee. Credentials: MD.
How much does Mark Hays, MD prescribe under Medicare Part D? ▼
In 2024, Mark Hays, MD wrote 13 Medicare Part D claims totaling $195 in drug costs for N/A beneficiaries.
Where is Mark Hays, MD located? ▼
Mark Hays, MD is located at 6148 LEE HWY STE 206, Chattanooga, TN, 37421. Phone: (423) 498-3300.
What is Mark Hays, MD's NPI number? ▼
Mark Hays, MD's National Provider Identifier (NPI) is 1689692295, issued on 07/18/2006.
How many Pediatric Cardiology Physician providers are there in the US? ▼
There are 2,663 Pediatric Cardiology Physician providers across 51 states in the US. The average Pediatric Cardiology Physician provider writes 93 Medicare Part D claims per year.
Does Mark Hays, MD accept Medicare? ▼
Mark Hays, MD appears in CMS Medicare data with 13 Part D claims and N/A Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mark Hays, MD's credentials? ▼
Mark Hays, MD's NPI is 1689692295 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.