NPI registry status
Active
2026 NPPES data Orthopaedic Foot and Ankle Surgery Physician NPI 1134345580 M.D.
Verify on CMS → Giselle Tan, M.D.
Orthopaedic Foot and Ankle Surgery Physician in West Burlington, 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 673 in Orthopaedic Foot and Ankle 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
70
Medicare Part D claims · 36 beneficiaries · Orthopaedic Foot and Ankle Surgery Physician avg: 218
MIPS score
77.8/100
▼ 6 pts below national avg 83.5 · Above neutral
Industry payments
$213.76
11 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Giselle Tan, M.D. reported a CMS MIPS final score of 77.8/100 - below the 83.5 national average - and filed 70 Medicare Part D claims in 2023.
- 77.8/100
- MIPS score · -6 vs avg
- 70
- Part D claims, 2023
- Likely
- board-certified (heuristic)
- ≥20th
- pct among measured MIPS (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.
Giselle Tan, M.D.'s MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
78 ≥ 20th percentile 20% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured providers. 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 whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Giselle Tan, M.D. sits
This provider among orthopaedic foot and ankle surgery physician peers
Across the 239 orthopaedic foot and ankle surgery physician providers who report both Medicare Part D prescribing and a MIPS quality score, Giselle Tan, M.D. writes more Part D claims than 26% of them and scores higher on MIPS quality than 30% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one orthopaedic foot and ankle surgery physician peer from a representative sample of 60; the gold marker is Giselle Tan, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Giselle Tan, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 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 Giselle Tan, M.D.?
Below national averagePrimary specialty
Orthopaedic Foot and Ankle Surgery Physician
Medicare Part D claims
70 68% vs specialty avg
MIPS final score
77.8/100 5.7 pts vs avg
Specialty distribution in Iowa
How Orthopaedic Foot and Ankle Surgery Physician compares to other specialties among Iowa providers
Medicare quality performance, MIPS
Giselle Tan, M.D.'s 2023 MIPS final score plotted against the Orthopaedic Foot and Ankle Surgery Physician national average
- MIPS Final Score
- 77.8/100
- vs 83.5 national avg · 2023 performance year
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).
Giselle Tan, M.D. appears in the CMS NPPES registry as an Orthopaedic Foot and Ankle Surgery Physician provider holding M.D. credentials at 1401 W AGENCY RD, West Burlington, IA, 52655, with a listed phone of (319) 768-4970. NPI 1134345580 was issued on 04/17/2007.
Medicare Part D records for calendar year 2023 show 70 prescription claims written by this provider, covering 36 Medicare beneficiaries and totaling roughly $2K in drug spend, with an opioid prescribing rate of 27.1%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 77.8/100 for the 2023 performance year (Quality 67.6, Cost 58.4), compared with the 83.5 average among clinicians with a measured score.
Orthopaedic Foot and Ankle Surgery Physician is a narrow specialty nationwide, with 673 enrolled providers across 51 states and an average of 218 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1134345580 |
|---|---|
| Specialty | Orthopaedic Foot and Ankle Surgery Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 04/17/2007 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
77.8186
Final Score
Measured-score avg: 83.5
67.6256
Quality
58.4365
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Giselle Tan, 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.
Iowa Physicians Clinic Medical Foundation
Waterloo, 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 Giselle Tan, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$214
Largest payer
Stryker Corporation
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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
70
Total Claims
$2K
Total Drug Cost
36
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 89
- Total Day Supply
- 1,803
- Brand Drug Cost
- $0
- Generic Drug Cost
- $2K
- Opioid Claims
- 19 (27.1% rate)
Patient Demographics
- Average Patient Age
- 71.8 years
- Avg HCC Risk Score
- 1.17
- Gender Split
- 67% female / 33% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Celecoxib | 23 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 17 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Orthopaedic Foot and Ankle Surgery Physician in IA →
All providers in Iowa →
Compare specialties →
Orthopaedic Foot and Ankle Surgery Physician Overview
How Giselle Tan, M.D. fits within the Orthopaedic Foot and Ankle Surgery Physician landscape nationally.
673
Orthopaedic Foot and Ankle Surgery Physician Providers in US
51
States with Orthopaedic Foot and Ankle Surgery Physician
218
Avg Claims per Provider
Giselle Tan, M.D.'s 70 claims are below the specialty average of 218.
Nearby Orthopaedic Foot and Ankle Surgery Physician Providers in Iowa
Other clinicians with the same primary specialty enrolled in Iowa, drawn from the same CMS NPPES roster as Tan.
One of 9 Orthopaedic Foot and Ankle Surgery Physician providers enrolled in Iowa, 5 are shown here.
Dr. Amrut Borade
MBBS, MS
Iowa City, IA
Dr. Pamela Davis
MD
Davenport, IA
Dr. John Femino
MD
Iowa City, IA
Dr. Lea Gunnell
MD
West Des Moines, IA
Dr. Moses Lee
MD
Iowa City, IA
Compare Orthopaedic Foot and Ankle Surgery Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Iowa medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Orthopaedic Foot and Ankle Surgery Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Giselle Tan, M.D.'s specialty? ▼
Giselle Tan, M.D. specializes in Orthopaedic Foot and Ankle Surgery Physician and practices in West Burlington, Iowa. Credentials: M.D..
How much does Giselle Tan, M.D. prescribe under Medicare Part D? ▼
In 2023, Giselle Tan, M.D. wrote 70 Medicare Part D claims totaling $2K in drug costs for 36 beneficiaries.
What is Giselle Tan, M.D.'s Medicare quality score? ▼
Giselle Tan, M.D. has a CMS MIPS Final Score of 77.8/100 (Quality: 67.6, Cost: 58.4). 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 Giselle Tan, M.D. located? ▼
Giselle Tan, M.D. is located at 1401 W AGENCY RD, West Burlington, IA, 52655. Phone: (319) 768-4970.
What is Giselle Tan, M.D.'s NPI number? ▼
Giselle Tan, M.D.'s National Provider Identifier (NPI) is 1134345580, issued on 04/17/2007.
Does Giselle Tan, M.D. prescribe opioids? ▼
Yes, Giselle Tan, M.D. had 19 opioid claims in 2023 with an opioid prescribing rate of 27.1%.
How many Orthopaedic Foot and Ankle Surgery Physician providers are there in the US? ▼
There are 673 Orthopaedic Foot and Ankle Surgery Physician providers across 51 states in the US. The average Orthopaedic Foot and Ankle Surgery Physician provider writes 218 Medicare Part D claims per year.
What drugs does Giselle Tan, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Giselle Tan, M.D.'s most frequently prescribed drugs include Celecoxib, Hydrocodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Giselle Tan, M.D. accept Medicare? ▼
Giselle Tan, M.D. appears in CMS Medicare data with 70 Part D claims and 36 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Giselle Tan, M.D.'s credentials? ▼
Giselle Tan, M.D.'s NPI is 1134345580 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 (2023). 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 April 2026 (NPPES) / 2023 (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 May 2026.