NPI registry status
Active
2026 NPPES data Colon & Rectal Surgery Physician NPI 1164554044 M.D.
Verify on CMS → John Trombold, M.D.
Colon & Rectal Surgery Physician in Springfield, Missouri.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,642 in Colon & Rectal Surgery 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
274
Medicare Part D claims · 106 beneficiaries · Colon & Rectal Surgery Physician avg: 210
Generic prescribing
95%
generic claims · 5% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
75/100
CMS neutral threshold · no category scores published
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
John Trombold, M.D. carries the neutral CMS MIPS final score of 75/100, assigned where no category was scored - and filed 274 Medicare Part D claims in 2024.
- 75/100
- CMS neutral score · not measured
- 274
- Part D claims, 2024
- 95%
- generic prescribing
- Likely
- board-certified (heuristic)
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 Trombold, M.D.
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 1164554044), first enumerated 03/09/2007.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 274 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
CMS assigned a neutral MIPS final score of 75/100 where no performance category was scored — not a measured quality rank.
Source: CMS Quality Payment Program
- 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
2 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 1164554044 · Colon & Rectal Surgery Physician
NPI-10 · ENUM-MID · TAX-NARROW · MIPS-NEUTRAL · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1164554044
- ENUM-MID 2007
- TAX-NARROW 1,642
- MIPS-NEUTRAL 75/100
- RX-LIGHT 274
- BOOK-THIN 25 in Missouri
- PHOTO-ENUM Dipen Maun · 2007
John Trombold, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
274 ≥ 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 Trombold, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 2 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 Trombold, M.D.?
CMS neutral score, not measuredPrimary specialty
Colon & Rectal Surgery Physician
Medicare Part D claims
274 30% vs specialty avg
MIPS final score
75/100
Specialty distribution in Missouri
How Colon & Rectal Surgery Physician compares to other specialties among Missouri providers
MIPS score not measured
CMS assigned a neutral 75/100 threshold
CMS did not publish any Quality, Cost, Promoting Interoperability, or Improvement Activities category score for this clinician. This administrative threshold is not comparable with the national average of clinicians whose MIPS score was measured.
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 | 1164554044 |
|---|---|
| Specialty | Colon & Rectal Surgery Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 03/09/2007 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
75
Final Score
CMS neutral threshold · not measured
Reporting: Group practice
Hospital and facility affiliations
Facilities where John Trombold, M.D. 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.
Lester E Cox Medical Centers
Springfield, MO
Lester E Cox Medical Centers
Springfield, MO
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 · Generic-heavy
John Trombold, M.D. - brand share 5.0%
Colon & Rectal Surgery Physician average
5% brand-name claims vs 95% generic, on 274 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.
274
Total Claims
$2K
Total Drug Cost
106
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 279
- Total Day Supply
- 2,518
- Brand vs Generic
- 5% brand / 95% generic
- Brand Drug Cost
- $295
- Generic Drug Cost
- $2K
- Opioid Claims
- 72 (26.3% rate)
- Antibiotic Claims
- 67
Patient Demographics
- Average Patient Age
- 71.3 years
- Avg HCC Risk Score
- 1.67
- Gender Split
- 52% female / 48% male
- Age Distribution
- <65: 21, 65-74: 49, 75-84: N/A, 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 Trombold, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Oxycodone Hcl
Oxycodone Hcl
67 claims
- Metronidazole
Metronidazole
36 claims
- Gabapentin
Gabapentin
31 claims
- Diphenoxylate-Atro…
Diphenoxylate-Atropine
27 claims
- Neomycin Sulfate 24
Neomycin Sulfate
24 claims
- Loperamide 19
Loperamide
19 claims
| Drug | Claims |
|---|---|
| Oxycodone Hcl | 67 |
| Metronidazole | 36 |
| Gabapentin | 31 |
| Diphenoxylate-Atropine Diphenoxylate Hcl/Atropine | 27 |
| Neomycin Sulfate | 24 |
| Loperamide Loperamide Hcl | 19 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Colon & Rectal Surgery Physician Overview
How John Trombold, M.D. fits within the Colon & Rectal Surgery Physician landscape nationally.
1,642
Colon & Rectal Surgery Physician Providers in US
50
States with Colon & Rectal Surgery Physician
210
Avg Claims per Provider
John Trombold, M.D.'s 274 claims are above the specialty average of 210.
Nationwide Colon & Rectal Surgery Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Trombold, both outside Missouri so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (75 here).
Same NPPES enumeration year (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Colon & Rectal Surgery Physician Providers in Missouri
Other clinicians with the same primary specialty enrolled in Missouri, drawn from the same CMS NPPES roster as Trombold.
One of 25 Colon & Rectal Surgery Physician providers enrolled in Missouri, 5 are shown here.
Dr. Steven Abbadessa
D.O.
Saint Louis, MO
Dr. Robert Amajoyi
M.D.
Kansas City, MO
Dr. Todd Arends
M.D.
Chesterfield, MO
Dr. Tiffany Chan
MD
Saint Louis, MO
Patrick Chizek
Saint Louis, MO
Compare Colon & Rectal Surgery Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is John Trombold, M.D.'s specialty? ▼
John Trombold, M.D. specializes in Colon & Rectal Surgery Physician and practices in Springfield, Missouri. Credentials: M.D..
How much does John Trombold, M.D. prescribe under Medicare Part D? ▼
In 2024, John Trombold, M.D. wrote 274 Medicare Part D claims totaling $2K in drug costs for 106 beneficiaries.
What is John Trombold, M.D.'s Medicare quality score? ▼
John Trombold, M.D. has a CMS MIPS Final Score of 75/100. CMS published no Quality, Promoting Interoperability, Improvement Activity or Cost score for this clinician, so the final score is the neutral performance threshold CMS assigns rather than a measured result. The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is John Trombold, M.D. located? ▼
John Trombold, M.D. is located at 1001 E PRIMROSE ST, Springfield, MO, 65807. Phone: (417) 875-3000.
What is John Trombold, M.D.'s NPI number? ▼
John Trombold, M.D.'s National Provider Identifier (NPI) is 1164554044, issued on 03/09/2007.
Does John Trombold, M.D. prescribe more brand-name or generic drugs? ▼
John Trombold, M.D.'s prescribing is 5% brand-name and 95% generic drugs by claim count, with $295 in brand drug costs.
Does John Trombold, M.D. prescribe opioids? ▼
Yes, John Trombold, M.D. had 72 opioid claims in 2024 with an opioid prescribing rate of 26.3%.
How many Colon & Rectal Surgery Physician providers are there in the US? ▼
There are 1,642 Colon & Rectal Surgery Physician providers across 50 states in the US. The average Colon & Rectal Surgery Physician provider writes 210 Medicare Part D claims per year.
What drugs does John Trombold, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, John Trombold, M.D.'s most frequently prescribed drugs include Oxycodone Hcl, Metronidazole, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does John Trombold, M.D. accept Medicare? ▼
John Trombold, M.D. appears in CMS Medicare data with 274 Part D claims and 106 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Trombold, M.D.'s credentials? ▼
John Trombold, M.D.'s NPI is 1164554044 with credentials M.D.. 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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.