NPI registry status
Active
2026 NPPES data Pediatric Nephrology Physician NPI 1265500888 MD
Verify on CMS → John Bissler, MD
Pediatric Nephrology Physician in Memphis, 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 753 in Pediatric Nephrology 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
124
Medicare Part D claims · 14 beneficiaries · Pediatric Nephrology Physician avg: 91
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
John Bissler, MD filed 124 Medicare Part D claims in 2024 as a Pediatric Nephrology Physician in Memphis, Tennessee, prescribing 88% generic.
- 124
- Part D claims, 2024
- 88%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥34th
- 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 Bissler, 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 1265500888), first enumerated 12/01/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 124 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
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 1265500888 · Pediatric Nephrology Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1265500888
- ENUM-LEGACY 2006
- TAX-NARROW 753
- RX-LIGHT 124
- BOOK-THIN 15 in Tennessee
- PHOTO-ENUM Jonathan Heiliczer,… · 2006
John Bissler, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
124 ≥ 34th percentile 34% 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 Bissler, 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 Bissler, MD?
Quality data not reportedPrimary specialty
Pediatric Nephrology Physician
Medicare Part D claims
124 36% vs specialty avg
Specialty distribution in Tennessee
How Pediatric Nephrology 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 Nephrology 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 | 1265500888 |
|---|---|
| Specialty | Pediatric Nephrology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 12/01/2006 |
Hospital and facility affiliations
Facilities where John Bissler, 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.
UT Lebonheur Pediatric Specialists, Inc.
Memphis, TN
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Typical
John Bissler, MD - brand share 12.0%
Pediatric Nephrology Physician average
12% brand-name claims vs 88% generic, on 124 2024 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
124
Total Claims
$580K
Total Drug Cost
14
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 173
- Total Day Supply
- 4,897
- Brand vs Generic
- 12% brand / 88% generic
- Brand Drug Cost
- $230K
- Generic Drug Cost
- $350K
Patient Demographics
- Average Patient Age
- 39.3 years
- Avg HCC Risk Score
- 1.07
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What John Bissler, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Everolimus
Everolimus
65 claims
- Losartan Potassium 15
Losartan Potassium
15 claims
- Afinitor 12
Afinitor
12 claims
| Drug | Claims |
|---|---|
| Everolimus | 65 |
| Losartan Potassium | 15 |
| Afinitor Everolimus | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Pediatric Nephrology Physician Overview
How John Bissler, MD fits within the Pediatric Nephrology Physician landscape nationally.
753
Pediatric Nephrology Physician Providers in US
50
States with Pediatric Nephrology Physician
91
Avg Claims per Provider
John Bissler, MD's 124 claims are above the specialty average of 91.
Nationwide Pediatric Nephrology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Bissler, 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 Nephrology Physician Providers in Tennessee
Other clinicians with the same primary specialty enrolled in Tennessee, drawn from the same CMS NPPES roster as Bissler.
One of 15 Pediatric Nephrology Physician providers enrolled in Tennessee, 5 are shown here.
Dr. James Atherton
M.D.
Memphis, TN
Dinah Batchelor
Memphis, TN
Dr. Tracy Hunley
MD
Nashville, TN
Dr. Bradley Hyman
D.O.
Memphis, TN
Dr. Kathy Jabs
MD
Nashville, TN
Compare Pediatric Nephrology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is John Bissler, MD's specialty? ▼
John Bissler, MD specializes in Pediatric Nephrology Physician and practices in Memphis, Tennessee. Credentials: MD.
How much does John Bissler, MD prescribe under Medicare Part D? ▼
In 2024, John Bissler, MD wrote 124 Medicare Part D claims totaling $580K in drug costs for 14 beneficiaries.
Where is John Bissler, MD located? ▼
John Bissler, MD is located at 51 N DUNLAP ST., Memphis, TN, 38105. Phone: (901) 287-7337.
What is John Bissler, MD's NPI number? ▼
John Bissler, MD's National Provider Identifier (NPI) is 1265500888, issued on 12/01/2006.
Does John Bissler, MD prescribe more brand-name or generic drugs? ▼
John Bissler, MD's prescribing is 12% brand-name and 88% generic drugs by claim count, with $230K in brand drug costs.
How many Pediatric Nephrology Physician providers are there in the US? ▼
There are 753 Pediatric Nephrology Physician providers across 50 states in the US. The average Pediatric Nephrology Physician provider writes 91 Medicare Part D claims per year.
What drugs does John Bissler, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, John Bissler, MD's most frequently prescribed drugs include Everolimus, Losartan Potassium, Afinitor. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does John Bissler, MD accept Medicare? ▼
John Bissler, MD appears in CMS Medicare data with 124 Part D claims and 14 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Bissler, MD's credentials? ▼
John Bissler, MD's NPI is 1265500888 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.