NPI registry status
Active
2026 NPPES data Gastroenterology Physician NPI 1487715512 MD
Verify on CMS → Robert Sandler, MD
Gastroenterology Physician in Chapel Hill, 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 17,061 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
221
Medicare Part D claims · 52 beneficiaries · Gastroenterology Physician avg: 848
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Robert Sandler, MD filed 221 Medicare Part D claims in 2024 as a Gastroenterology Physician in Chapel Hill, North Carolina, prescribing 88% generic.
- 221
- Part D claims, 2024
- 88%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥48th
- 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 Robert Sandler, 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 1487715512), first enumerated 12/13/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 221 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
- 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 1487715512 · Gastroenterology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1487715512
- ENUM-LEGACY 2006
- TAX-MID 17K Gastroenterology Physician
- RX-LIGHT 221
- BOOK-LIGHT 539 in North Carolina
- PHOTO-ENUM Karl Anderson · 2006
Robert Sandler, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
221 ≥ 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)
Robert Sandler, 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 Robert Sandler, MD?
Quality data not reportedPrimary specialty
Gastroenterology Physician
Medicare Part D claims
221 74% vs specialty avg
Specialty distribution in North Carolina
How Gastroenterology Physician compares to other specialties among North Carolina 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 Gastroenterology 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 | 1487715512 |
|---|---|
| Specialty | Gastroenterology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 12/13/2006 |
Hospital and facility affiliations
Facilities where Robert Sandler, 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.
University OF North Carolina AT Chapel Hill
Chapel Hill, NC
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 · Typical
Robert Sandler, MD - brand share 12.0%
Gastroenterology Physician average
12% brand-name claims vs 88% generic, on 221 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.
221
Total Claims
$21K
Total Drug Cost
52
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 401.667
- Total Day Supply
- 11,556
- Brand vs Generic
- 12% brand / 88% generic
- Brand Drug Cost
- $14K
- Generic Drug Cost
- $7K
Patient Demographics
- Average Patient Age
- 67.0 years
- Avg HCC Risk Score
- 1.64
- Gender Split
- 75% female / 25% male
- Age Distribution
- <65: 16, 65-74: 26, 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 Robert Sandler, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Omeprazole
Omeprazole
52 claims
- Linzess 17
Linzess
17 claims
- Dicyclomine Hcl 16
Dicyclomine Hcl
16 claims
- Diphenoxylate-Atro… 14
Diphenoxylate-Atropine
14 claims
- Amitriptyline Hcl 13
Amitriptyline Hcl
13 claims
- Desipramine Hcl 12
Desipramine Hcl
12 claims
- Cholestyramine 11
Cholestyramine
11 claims
| Drug | Claims |
|---|---|
| Omeprazole | 52 |
| Linzess Linaclotide | 17 |
| Dicyclomine Hcl | 16 |
| Diphenoxylate-Atropine Diphenoxylate Hcl/Atropine | 14 |
| Amitriptyline Hcl | 13 |
| Desipramine Hcl | 12 |
| Cholestyramine Cholestyramine (With Sugar) | 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 Robert Sandler, MD fits within the Gastroenterology Physician landscape nationally.
17,061
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
848
Avg Claims per Provider
Robert Sandler, MD's 221 claims are below the specialty average of 848.
Nationwide Gastroenterology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Sandler, both outside North Carolina so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
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 Sandler.
One of 539 Gastroenterology Physician providers enrolled in North Carolina, 5 are shown here.
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 →
Frequently Asked Questions
What is Robert Sandler, MD's specialty? ▼
Robert Sandler, MD specializes in Gastroenterology Physician and practices in Chapel Hill, North Carolina. Credentials: MD.
How much does Robert Sandler, MD prescribe under Medicare Part D? ▼
In 2024, Robert Sandler, MD wrote 221 Medicare Part D claims totaling $21K in drug costs for 52 beneficiaries.
Where is Robert Sandler, MD located? ▼
Robert Sandler, MD is located at 101 MANNING DR, Chapel Hill, NC, 27599. Phone: (919) 966-4996.
What is Robert Sandler, MD's NPI number? ▼
Robert Sandler, MD's National Provider Identifier (NPI) is 1487715512, issued on 12/13/2006.
Does Robert Sandler, MD prescribe more brand-name or generic drugs? ▼
Robert Sandler, MD's prescribing is 12% brand-name and 88% generic drugs by claim count, with $14K in brand drug costs.
How many Gastroenterology Physician providers are there in the US? ▼
There are 17,061 Gastroenterology Physician providers across 54 states in the US. The average Gastroenterology Physician provider writes 848 Medicare Part D claims per year.
What drugs does Robert Sandler, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Robert Sandler, MD's most frequently prescribed drugs include Omeprazole, Linzess, Dicyclomine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Robert Sandler, MD accept Medicare? ▼
Robert Sandler, MD appears in CMS Medicare data with 221 Part D claims and 52 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Robert Sandler, MD's credentials? ▼
Robert Sandler, MD's NPI is 1487715512 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.