NPI registry status
Active
2026 NPPES data Allergy & Immunology Physician NPI 1134129620 M.D.
Verify on CMS → Jason Guin, M.D.
Allergy & Immunology Physician in New Albany, Indiana.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 3,412 in Allergy & Immunology 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
258
Medicare Part D claims · 90 beneficiaries · Allergy & Immunology Physician avg: 788
Generic prescribing
72%
generic claims · 28% 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
Jason Guin, M.D. carries the neutral CMS MIPS final score of 75/100, assigned where no category was scored - and filed 258 Medicare Part D claims in 2024.
- 75/100
- CMS neutral score · not measured
- 258
- Part D claims, 2024
- 72%
- 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 Jason Guin, 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 1134129620), first enumerated 07/26/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 258 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.
- 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 1134129620 · Allergy & Immunology Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · MIPS-NEUTRAL · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1134129620
- ENUM-LEGACY 2005
- TAX-NARROW 3,412
- MIPS-NEUTRAL 75/100
- RX-LIGHT 258
- BOOK-THIN 49 in Indiana
- PHOTO-ENUM Ralph Bobbitt, M.D. · 2005
Jason Guin, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
258 ≥ 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)
Jason Guin, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Jason Guin, M.D.?
CMS neutral score, not measuredPrimary specialty
Allergy & Immunology Physician
Medicare Part D claims
258 67% vs specialty avg
MIPS final score
75/100
Specialty distribution in Indiana
How Allergy & Immunology Physician compares to other specialties among Indiana 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 | 1134129620 |
|---|---|
| Specialty | Allergy & Immunology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 07/26/2005 |
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
Brand vs generic prescribing mix · Above average
Jason Guin, M.D. - brand share 28.0%
Allergy & Immunology Physician average
28% brand-name claims vs 72% generic, on 258 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.
258
Total Claims
$207K
Total Drug Cost
90
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 447.567
- Total Day Supply
- 13,169
- Brand vs Generic
- 28% brand / 72% generic
- Brand Drug Cost
- $202K
- Generic Drug Cost
- $5K
Patient Demographics
- Average Patient Age
- 66.5 years
- Avg HCC Risk Score
- 1.54
- Gender Split
- 74% female / 26% male
- Age Distribution
- <65: 18, 65-74: 56, 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 Jason Guin, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Montelukast Sodium
Montelukast Sodium
62 claims
- Fluticasone Propio…
Fluticasone Propionate
47 claims
- Azelastine Hcl
Azelastine Hcl
39 claims
- Epinephrine 14
Epinephrine
14 claims
- Breo Ellipta 13
Breo Ellipta
13 claims
- Albuterol Sulfate … 11
Albuterol Sulfate Hfa
11 claims
| Drug | Claims |
|---|---|
| Montelukast Sodium | 62 |
| Fluticasone Propionate | 47 |
| Azelastine Hcl | 39 |
| Epinephrine | 14 |
| Breo Ellipta Fluticasone/Vilanterol | 13 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Allergy & Immunology Physician Overview
How Jason Guin, M.D. fits within the Allergy & Immunology Physician landscape nationally.
3,412
Allergy & Immunology Physician Providers in US
52
States with Allergy & Immunology Physician
788
Avg Claims per Provider
Jason Guin, M.D.'s 258 claims are below the specialty average of 788.
Nationwide Allergy & Immunology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Guin, both outside Indiana 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 (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Allergy & Immunology Physician Providers in Indiana
Other clinicians with the same primary specialty enrolled in Indiana, drawn from the same CMS NPPES roster as Guin.
One of 49 Allergy & Immunology Physician providers enrolled in Indiana, 5 are shown here.
Dr. Muhammad Afzal
M.D.
New Castle, IN
Dr. Sohaib Aleem
MD
South Bend, IN
Dr. Frank Amodio
MD
Evansville, IN
Dr. Christina Barnes
MD
South Bend, IN
Dr. Jillian Belmonte
MD
Indianapolis, IN
Compare Allergy & Immunology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Jason Guin, M.D.'s specialty? ▼
Jason Guin, M.D. specializes in Allergy & Immunology Physician and practices in New Albany, Indiana. Credentials: M.D..
How much does Jason Guin, M.D. prescribe under Medicare Part D? ▼
In 2024, Jason Guin, M.D. wrote 258 Medicare Part D claims totaling $207K in drug costs for 90 beneficiaries.
What is Jason Guin, M.D.'s Medicare quality score? ▼
Jason Guin, 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 Jason Guin, M.D. located? ▼
Jason Guin, M.D. is located at 3003 CHARLESTOWN CROSSING WAY, New Albany, IN, 47150. Phone: (812) 945-5653.
What is Jason Guin, M.D.'s NPI number? ▼
Jason Guin, M.D.'s National Provider Identifier (NPI) is 1134129620, issued on 07/26/2005.
Does Jason Guin, M.D. prescribe more brand-name or generic drugs? ▼
Jason Guin, M.D.'s prescribing is 28% brand-name and 72% generic drugs by claim count, with $202K in brand drug costs.
How many Allergy & Immunology Physician providers are there in the US? ▼
There are 3,412 Allergy & Immunology Physician providers across 52 states in the US. The average Allergy & Immunology Physician provider writes 788 Medicare Part D claims per year.
What drugs does Jason Guin, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Jason Guin, M.D.'s most frequently prescribed drugs include Montelukast Sodium, Fluticasone Propionate, Azelastine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Jason Guin, M.D. accept Medicare? ▼
Jason Guin, M.D. appears in CMS Medicare data with 258 Part D claims and 90 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Jason Guin, M.D.'s credentials? ▼
Jason Guin, M.D.'s NPI is 1134129620 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.