NPI registry status
Active
2026 NPPES data Clinical Biochemical Genetics Physician NPI 1477761328 MD
Verify on CMS → Amy Calhoun, MD
Clinical Biochemical Genetics Physician in Iowa City, Iowa.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 83 in Clinical Biochemical Genetics 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
44
Medicare Part D claims · Clinical Biochemical Genetics Physician avg: 44
Generic prescribing
66%
generic claims · 34% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$47
1 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Amy Calhoun, MD filed 44 Medicare Part D claims in 2024 as a Clinical Biochemical Genetics Physician in Iowa City, Iowa, prescribing 66% generic.
- 44
- Part D claims, 2024
- 66%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥0th
- 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 Amy Calhoun, 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 1477761328), first enumerated 05/21/2007.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 44 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
- Reported
Industry payment transparency
$47 in reported industry payments (1 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- 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 1477761328 · Clinical Biochemical Genetics Physician
NPI-10 · ENUM-MID · TAX-TRACE · RX-TRACE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1477761328
- ENUM-MID 2007
- TAX-TRACE 83
- RX-TRACE 44
- BOOK-THIN 2 in Iowa
- PHOTO-ENUM Natasha Shur, MD · 2007
Amy Calhoun, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
44 ≥ 0th percentile 0% 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)
Amy Calhoun, 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 Amy Calhoun, MD?
Quality data not reportedPrimary specialty
Clinical Biochemical Genetics Physician
Medicare Part D claims
44 0% vs specialty avg
Specialty distribution in Iowa
How Clinical Biochemical Genetics Physician compares to other specialties among Iowa 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 Clinical Biochemical Genetics 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 | 1477761328 |
|---|---|
| Specialty | Clinical Biochemical Genetics Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 05/21/2007 |
Hospital and facility affiliations
Facilities where Amy Calhoun, 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.
State University OF Iowa
Iowa City, IA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Amy Calhoun, MD. Source: openpaymentsdata.cms.gov.
Total received
$47
Largest payer
Travere Therapeutics, Inc.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Brand vs generic prescribing mix · Above average
Amy Calhoun, MD - brand share 34.0%
Clinical Biochemical Genetics Physician average
34% brand-name claims vs 66% generic, on 44 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.
44
Total Claims
$248K
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 52
- Total Day Supply
- 1,560
- Brand vs Generic
- 34% brand / 66% generic
- Brand Drug Cost
- $212K
- Generic Drug Cost
- $36K
Patient Demographics
- Average Patient Age
- 50.4 years
- Avg HCC Risk Score
- 0.93
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Dojolvi Triheptanoin | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Clinical Biochemical Genetics Physician Overview
How Amy Calhoun, MD fits within the Clinical Biochemical Genetics Physician landscape nationally.
83
Clinical Biochemical Genetics Physician Providers in US
26
States with Clinical Biochemical Genetics Physician
44
Avg Claims per Provider
Amy Calhoun, MD's 44 claims are below the specialty average of 44.
Nationwide Clinical Biochemical Genetics Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Calhoun, both outside Iowa so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Clinical Biochemical Genetics Physician Providers in Iowa
Other clinicians with the same primary specialty enrolled in Iowa, drawn from the same CMS NPPES roster as Calhoun.
Compare Clinical Biochemical Genetics Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Amy Calhoun, MD's specialty? ▼
Amy Calhoun, MD specializes in Clinical Biochemical Genetics Physician and practices in Iowa City, Iowa. Credentials: MD.
How much does Amy Calhoun, MD prescribe under Medicare Part D? ▼
In 2024, Amy Calhoun, MD wrote 44 Medicare Part D claims totaling $248K in drug costs for N/A beneficiaries.
Where is Amy Calhoun, MD located? ▼
Amy Calhoun, MD is located at 200 HAWKINS DR, Iowa City, IA, 52242. Phone: (319) 356-2675.
What is Amy Calhoun, MD's NPI number? ▼
Amy Calhoun, MD's National Provider Identifier (NPI) is 1477761328, issued on 05/21/2007.
Does Amy Calhoun, MD prescribe more brand-name or generic drugs? ▼
Amy Calhoun, MD's prescribing is 34% brand-name and 66% generic drugs by claim count, with $212K in brand drug costs.
How many Clinical Biochemical Genetics Physician providers are there in the US? ▼
There are 83 Clinical Biochemical Genetics Physician providers across 26 states in the US. The average Clinical Biochemical Genetics Physician provider writes 44 Medicare Part D claims per year.
What drugs does Amy Calhoun, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Amy Calhoun, MD's most frequently prescribed drugs include Dojolvi. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Amy Calhoun, MD accept Medicare? ▼
Amy Calhoun, MD appears in CMS Medicare data with 44 Part D claims and N/A Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Amy Calhoun, MD's credentials? ▼
Amy Calhoun, MD's NPI is 1477761328 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.