NPI registry status
Active
2026 NPPES data Gastroenterology Physician NPI 1275566283
Verify on CMS → Preston Purdum
Gastroenterology Physician in Charlotte, North Carolina.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 16,601 in Gastroenterology 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
399
Medicare Part D claims · 141 beneficiaries · Gastroenterology Physician avg: 833
Generic prescribing
81%
generic claims · 19% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
91.1/100
▲ 8 pts above national avg 83.1 · Exceptional
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Preston Purdum reported a CMS MIPS final score of 91.1/100 - above the 83.1 national average - and filed 399 Medicare Part D claims in 2023.
- 91.1/100
- MIPS score · +8 vs avg
- 399
- Part D claims, 2023
- 81%
- 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.
Preston Purdum's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
91 Top 37% higher than 63% of 477,587 scored providers
Each bar is a band; taller bars hold more scored 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.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Preston Purdum sits
This provider among gastroenterology physician peers
Across the 5,957 gastroenterology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Preston Purdum writes more Part D claims than 27% of them and scores higher on MIPS quality than 66% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one gastroenterology physician peer from a representative sample of 60; the gold marker is Preston Purdum. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Preston Purdum 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 Preston Purdum?
High performer (top quartile)Primary specialty
Gastroenterology Physician
Medicare Part D claims
399 52% vs specialty avg
MIPS final score
91.1/100 8 pts vs avg
Specialty distribution in North Carolina
How Gastroenterology Physician compares to other specialties among North Carolina providers
Medicare quality performance, MIPS
Preston Purdum's 2023 MIPS final score plotted against the Gastroenterology Physician national average
- MIPS Final Score
- 91.1/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Gastroenterology Physician) - 91.1/100 vs national avg 83.1
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).
Preston Purdum appears in the CMS NPPES registry as a Gastroenterology Physician provider at 300 BILLINGSLEY RD STE 200, Charlotte, NC, 28211, with a listed phone of (704) 372-7974. NPI 1275566283 was issued on 07/10/2006.
Medicare Part D records for calendar year 2023 show 399 prescription claims written by this provider, covering 141 Medicare beneficiaries and totaling roughly $73K in drug spend, split 19% brand-name and 81% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 91.1/100 for the 2023 performance year (Quality 85, Cost 85.2), compared with the national average of 83.1.
Gastroenterology Physician is a mid-sized specialty nationwide, with 16,601 enrolled providers across 54 states and an average of 833 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 | 1275566283 |
|---|---|
| Specialty | Gastroenterology Physician |
| Gender | Male |
| NPI Issued | 07/10/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
91.0624
Final Score
Avg: 83.1
84.9665
Quality
85.2414
Cost
100
Promoting Interoperability
Reporting: Group practice
Brand vs generic prescribing mix · Typical
Preston Purdum - brand share 19.0%
Gastroenterology Physician average
19% brand-name claims vs 81% generic, on 399 2023 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 2023.
399
Total Claims
$73K
Total Drug Cost
141
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 774
- Total Day Supply
- 22,991
- Brand vs Generic
- 19% brand / 81% generic
- Brand Drug Cost
- $52K
- Generic Drug Cost
- $22K
Patient Demographics
- Average Patient Age
- 71.7 years
- Avg HCC Risk Score
- 1.59
- Gender Split
- 68% female / 32% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Preston Purdum prescribes most
Top Medicare Part D drugs by claim count, 2023
- Famotidine
Famotidine
134 claims
- Pantoprazole Sodium 39
Pantoprazole Sodium
39 claims
- Linzess 26
Linzess
26 claims
- Omeprazole 22
Omeprazole
22 claims
- Ursodiol 17
Ursodiol
17 claims
- Movantik 12
Movantik
12 claims
- Tacrolimus 12
Tacrolimus
12 claims
- Dexlansoprazole Dr 11
Dexlansoprazole Dr
11 claims
| Drug | Claims |
|---|---|
| Famotidine | 134 |
| Pantoprazole Sodium | 39 |
| Linzess Linaclotide | 26 |
| Omeprazole | 22 |
| Ursodiol | 17 |
| Movantik Naloxegol Oxalate | 12 |
| Tacrolimus | 12 |
| Dexlansoprazole Dr Dexlansoprazole | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Gastroenterology Physician Overview
How Preston Purdum fits within the Gastroenterology Physician landscape nationally.
16,601
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
833
Avg Claims per Provider
Preston Purdum's 399 claims are below the specialty average of 833.
Nearby Gastroenterology Physician Providers in North Carolina
Other clinicians with the same primary specialty enrolled in North Carolina, drawn from the same CMS NPPES roster as Purdum.
Dr. Manal Abdelmalek
MD
Durham, NC
Dr. Sonia Abichandani
M.D.
Cary, NC
Dr. Sabeen Abid
M.D
Greenville, NC
Dr. Kendral Adkisson
MD
Asheville, NC
Dr. Vipul Aggarwal
M.D.
Winston Salem, NC
Compare Gastroenterology 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 North Carolina medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Gastroenterology 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore North Carolina
Frequently Asked Questions
What is Preston Purdum's specialty? ▼
Preston Purdum specializes in Gastroenterology Physician and practices in Charlotte, North Carolina.
How much does Preston Purdum prescribe under Medicare Part D? ▼
In 2023, Preston Purdum wrote 399 Medicare Part D claims totaling $73K in drug costs for 141 beneficiaries.
What is Preston Purdum's Medicare quality score? ▼
Preston Purdum has a CMS MIPS Final Score of 91.1/100 (Quality: 85, Cost: 85.2). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Preston Purdum located? ▼
Preston Purdum is located at 300 BILLINGSLEY RD STE 200, Charlotte, NC, 28211. Phone: (704) 372-7974.
What is Preston Purdum's NPI number? ▼
Preston Purdum's National Provider Identifier (NPI) is 1275566283, issued on 07/10/2006.
Does Preston Purdum prescribe more brand-name or generic drugs? ▼
Preston Purdum's prescribing is 19% brand-name and 81% generic drugs by claim count, with $52K in brand drug costs.
How many Gastroenterology Physician providers are there in the US? ▼
There are 16,601 Gastroenterology Physician providers across 54 states in the US. The average Gastroenterology Physician provider writes 833 Medicare Part D claims per year.
What drugs does Preston Purdum prescribe most often? ▼
Based on 2023 Medicare Part D data, Preston Purdum's most frequently prescribed drugs include Famotidine, Pantoprazole Sodium, Linzess. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Preston Purdum accept Medicare? ▼
Preston Purdum appears in CMS Medicare data with 399 Part D claims and 141 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Preston Purdum's credentials? ▼
Preston Purdum's NPI is 1275566283. 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
Compiled from official public sources by the PlainDoctor editorial team.
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.