NPI registry status
Active
2026 NPPES data Gastroenterology Physician NPI 1326075318 MD
Verify on CMS → Charles Billings, MD
Gastroenterology Physician in Huntsville, Alabama.
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
2K
Medicare Part D claims · 495 beneficiaries · Gastroenterology Physician avg: 833
Generic prescribing
76%
generic claims · 24% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
75/100
CMS neutral threshold · no category scores published
Industry payments
$2.4K
132 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Charles Billings, MD carries the neutral CMS MIPS final score of 75/100, assigned where no category was scored - and filed 1,711 Medicare Part D claims in 2023.
- 75/100
- CMS neutral score · not measured
- 2K
- Part D claims, 2023
- 76%
- 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 Charles Billings, 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 1326075318), first enumerated 06/27/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 1,711 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.
- 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
$2.4K in reported industry payments (132 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 1326075318 · Gastroenterology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · MIPS-NEUTRAL · RX-MID · BOOK-THIN · PHOTO-ENUM
- NPI-10 1326075318
- ENUM-LEGACY 2006
- TAX-MID 17K Gastroenterology Physician
- MIPS-NEUTRAL 75/100
- RX-MID 1,711
- BOOK-THIN 192 in Alabama
- PHOTO-ENUM Manuel Imbert Garraton · 2006
Charles Billings, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,711 ≥ 83rd percentile 83% of 1,370,886 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 · 2023
✓
Board certification likely (heuristic, not verified)
Charles Billings, MD 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 Charles Billings, MD?
CMS neutral score, not measuredPrimary specialty
Gastroenterology Physician
Medicare Part D claims
1,711 105% vs specialty avg
MIPS final score
75/100
Specialty distribution in Alabama
How Gastroenterology Physician compares to other specialties among Alabama 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 | 1326075318 |
|---|---|
| Specialty | Gastroenterology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 06/27/2006 |
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
Hospital and facility affiliations
Facilities where Charles Billings, 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.
The Center For Colon And Digestive Disease P C
Huntsville, AL
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 Charles Billings, MD. Source: openpaymentsdata.cms.gov.
Total received
$2.4K
Largest payer
ABBVIE 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 · Typical
Charles Billings, MD - brand share 24.0%
Gastroenterology Physician average
24% brand-name claims vs 76% generic, on 1,711 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.
1,711
Total Claims
$1.0M
Total Drug Cost
495
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 3,062
- Total Day Supply
- 85,081
- Brand vs Generic
- 24% brand / 76% generic
- Brand Drug Cost
- $909K
- Generic Drug Cost
- $100K
- Antibiotic Claims
- 66
Patient Demographics
- Average Patient Age
- 70.1 years
- Avg HCC Risk Score
- 1.14
- Gender Split
- 68% female / 32% male
- Age Distribution
- <65: 73, 65-74: 273, 75-84: 133, 85+: 16
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Charles Billings, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Pantoprazole Sodium
Pantoprazole Sodium
323 claims
- Omeprazole
Omeprazole
159 claims
- Famotidine
Famotidine
144 claims
- Esomeprazole Magne… 110
Esomeprazole Magnesium
110 claims
- Linzess 67
Linzess
67 claims
- Sucralfate 59
Sucralfate
59 claims
- Creon 58
Creon
58 claims
- Ondansetron Odt 58
Ondansetron Odt
58 claims
| Drug | Claims |
|---|---|
| Pantoprazole Sodium | 323 |
| Omeprazole | 159 |
| Famotidine | 144 |
| Esomeprazole Magnesium | 110 |
| Linzess Linaclotide | 67 |
| Sucralfate | 59 |
| Creon Lipase/Protease/Amylase | 58 |
| Ondansetron Odt Ondansetron | 58 |
| Cholestyramine Cholestyramine (With Sugar) | 46 |
| Clenpiq Sod Picosulf/Mag Ox/Citric Ac | 45 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Gastroenterology Physician Overview
How Charles Billings, MD fits within the Gastroenterology Physician landscape nationally.
16,601
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
833
Avg Claims per Provider
Charles Billings, MD's 1,711 claims are above the specialty average of 833.
Nationwide Gastroenterology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Billings, both outside Alabama 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 (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Gastroenterology Physician Providers in Alabama
Other clinicians with the same primary specialty enrolled in Alabama, drawn from the same CMS NPPES roster as Billings.
One of 192 Gastroenterology Physician providers enrolled in Alabama, 5 are shown here.
Dr. Sam Abdehou
MD
Mobile, AL
Dr. Rishi Agarwal
M.D.
Birmingham, AL
Dr. Patricia Ajayi-Fox
M.D.
Birmingham, AL
Dr. Robert Albares
MD
Dothan, AL
Dr. Francisco Alcocer
MD
Birmingham, AL
Compare Gastroenterology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Charles Billings, MD's specialty? ▼
Charles Billings, MD specializes in Gastroenterology Physician and practices in Huntsville, Alabama. Credentials: MD.
How much does Charles Billings, MD prescribe under Medicare Part D? ▼
In 2023, Charles Billings, MD wrote 1,711 Medicare Part D claims totaling $1.0M in drug costs for 495 beneficiaries.
What is Charles Billings, MD's Medicare quality score? ▼
Charles Billings, MD 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 Charles Billings, MD located? ▼
Charles Billings, MD is located at 119 LONGWOOD DR SW, Huntsville, AL, 35801. Phone: (256) 533-6488.
What is Charles Billings, MD's NPI number? ▼
Charles Billings, MD's National Provider Identifier (NPI) is 1326075318, issued on 06/27/2006.
Does Charles Billings, MD prescribe more brand-name or generic drugs? ▼
Charles Billings, MD's prescribing is 24% brand-name and 76% generic drugs by claim count, with $909K 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 Charles Billings, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Charles Billings, MD's most frequently prescribed drugs include Pantoprazole Sodium, Omeprazole, Famotidine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Charles Billings, MD accept Medicare? ▼
Charles Billings, MD appears in CMS Medicare data with 1,711 Part D claims and 495 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Charles Billings, MD's credentials? ▼
Charles Billings, MD's NPI is 1326075318 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 (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.