NPI registry status
Active
2026 NPPES data Hematology (Pathology) Physician NPI 1699202796 MD
Verify on CMS → John Stalls, MD
Hematology (Pathology) Physician in Charleston, South 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 755 in Hematology (Pathology) 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 Stalls, MD is a Hematology (Pathology) Physician in Charleston, South Carolina, listed in the federal CMS National Provider Identifier registry.
- Likely
- board-certified (heuristic)
- #242
- Hematology (Pathology) Physician rank among South Carolina 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 Stalls, MD
Federal registry listing with board-eligibility signals — verify credentials with the state medical board before clinical decisions.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1699202796), first enumerated 05/19/2017.
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
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation 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 1699202796 · Hematology (Pathology) Physician
NPI-10 · ENUM-RECENT · TAX-NARROW · RX-NONE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1699202796
- ENUM-RECENT 2017
- TAX-NARROW 755
- RX-NONE No Part D
- BOOK-THIN 13 in South Carolina
- PHOTO-ENUM Kemin Xu · 2017
✓
Board certification likely (heuristic, not verified)
John Stalls, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - 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 Stalls, MD?
Quality data not reportedPrimary specialty
Hematology (Pathology) Physician
Specialty distribution in South Carolina
How Hematology (Pathology) Physician compares to other specialties among South 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 Hematology (Pathology) 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 | 1699202796 |
|---|---|
| Specialty | Hematology (Pathology) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/19/2017 |
Hospital and facility affiliations
Facilities where John Stalls, 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.
University Medical Associates OF The Medical University OF South Carol
Charleston, SC
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
More Hematology (Pathology) Physician in SC →
All providers in South Carolina →
Compare specialties →
Hematology (Pathology) Physician Overview
How John Stalls, MD fits within the Hematology (Pathology) Physician landscape nationally.
755
Hematology (Pathology) Physician Providers in US
47
States with Hematology (Pathology) Physician
487
Avg Claims per Provider
Nationwide Hematology (Pathology) Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Stalls, both outside South Carolina so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2017)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Hematology (Pathology) Physician Providers in South Carolina
Other clinicians with the same primary specialty enrolled in South Carolina, drawn from the same CMS NPPES roster as Stalls.
One of 13 Hematology (Pathology) Physician providers enrolled in South Carolina, 5 are shown here.
Dr. Lydia Christiansen
MD
Charleston, SC
Dr. Lorna Cruz
MD
Greenville, SC
Dr. Keni Gu
M.D.
Greenville, SC
Dr. Michael Hayes
MD
Columbia, SC
Dr. Alison Huppmann
M.D.
Greenville, SC
Compare Hematology (Pathology) Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is John Stalls, MD's specialty? ▼
John Stalls, MD specializes in Hematology (Pathology) Physician and practices in Charleston, South Carolina. Credentials: MD.
Where is John Stalls, MD located? ▼
John Stalls, MD is located at 171 ASHLEY AVE, Charleston, SC, 29425. Phone: (843) 792-1414.
What is John Stalls, MD's NPI number? ▼
John Stalls, MD's National Provider Identifier (NPI) is 1699202796, issued on 05/19/2017.
How many Hematology (Pathology) Physician providers are there in the US? ▼
There are 755 Hematology (Pathology) Physician providers across 47 states in the US. The average Hematology (Pathology) Physician provider writes 487 Medicare Part D claims per year.
Does John Stalls, MD accept Medicare? ▼
John Stalls, 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 Stalls, MD's credentials? ▼
John Stalls, MD's NPI is 1699202796 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.