NPI registry status
Active
2026 NPPES data Pediatric Cardiology Physician NPI 1366467094 MD
Verify on CMS → John Stock, MD
Pediatric Cardiology Physician in Tempe, Arizona.
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.
What the federal data shows
John Stock, MD is a Pediatric Cardiology Physician in Tempe, Arizona, listed in the federal CMS National Provider Identifier registry.
- #173
- Pediatric Cardiology Physician rank among Arizona 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 Stock, 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 1366467094), first enumerated 07/13/2006.
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
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- 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 1366467094 · Pediatric Cardiology Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · RX-NONE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1366467094
- ENUM-LEGACY 2006
- TAX-NARROW 2,663
- RX-NONE No Part D
- BOOK-THIN 50 in Arizona
- PHOTO-ENUM Derek Fyfe · 2006
◑
Board-eligible specialty (heuristic, not verified)
John Stock, 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 John Stock, MD?
Quality data not reportedPrimary specialty
Pediatric Cardiology Physician
Specialty distribution in Arizona
How Pediatric Cardiology Physician compares to other specialties among Arizona 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 | 1366467094 |
|---|---|
| Specialty | Pediatric Cardiology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 07/13/2006 |
Pediatric Cardiology Physician Overview
How John Stock, 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
Nationwide Pediatric Cardiology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Stock, both outside Arizona 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 Arizona
Other clinicians with the same primary specialty enrolled in Arizona, drawn from the same CMS NPPES roster as Stock.
One of 50 Pediatric Cardiology Physician providers enrolled in Arizona, 5 are shown here.
Dr. Ernerio Alboliras
MD
Scottsdale, AZ
Dr. Shabib Alhadheri
MD
Chandler, AZ
Dr. Jordan Awerbach
M.D., M.P.H.
Phoenix, AZ
Dr. Brent Barber
M.D.
Tucson, AZ
Dr. Peter Baron
MD
Phoenix, AZ
Compare Pediatric Cardiology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is John Stock, MD's specialty? ▼
John Stock, MD specializes in Pediatric Cardiology Physician and practices in Tempe, Arizona. Credentials: MD.
Where is John Stock, MD located? ▼
John Stock, MD is located at 7505 S MCCLINTOCK DR, Tempe, AZ, 85283. Phone: (480) 755-1000.
What is John Stock, MD's NPI number? ▼
John Stock, MD's National Provider Identifier (NPI) is 1366467094, issued on 07/13/2006.
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 John Stock, MD accept Medicare? ▼
John Stock, 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 Stock, MD's credentials? ▼
John Stock, MD's NPI is 1366467094 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.