NPI registry status
Active
2026 NPPES data Specialist NPI 1639110224 MD
Verify on CMS → Jonathan Siegel, MD
Specialist in Mobile, 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 69,608 in Specialist, 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
5K
Medicare Part D claims · 1K beneficiaries · Specialist avg: 1K
Generic prescribing
68%
generic claims · 32% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
97.6/100
▲ 14 pts above national avg 83.1 · Exceptional
Industry payments
$2.8K
177 payments · CMS Open Payments (Sunshine Act)
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
Jonathan Siegel, MD reported a CMS MIPS final score of 97.6/100 - above the 83.1 national average - and filed 4,545 Medicare Part D claims in 2023.
- 97.6/100
- MIPS score · +14 vs avg
- 5K
- Part D claims, 2023
- 68%
- generic prescribing
- $2.8K
- industry payments (Sunshine Act)
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.
Jonathan Siegel, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
98 Top 15% higher than 85% 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 Jonathan Siegel, MD sits
This provider among specialist peers
Across the 4,869 specialist providers who report both Medicare Part D prescribing and a MIPS quality score, Jonathan Siegel, MD writes more Part D claims than 88% of them and scores higher on MIPS quality than 86% - placing this provider in the high-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 specialist peer from a representative sample of 60; the gold marker is Jonathan Siegel, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Jonathan Siegel, MD?
High performer (top quartile)Primary specialty
Specialist
Medicare Part D claims
4,545 208% vs specialty avg
MIPS final score
97.6/100 14.5 pts vs avg
Specialty distribution in Alabama
How Specialist compares to other specialties among Alabama providers
Medicare quality performance, MIPS
Jonathan Siegel, MD's 2023 MIPS final score plotted against the Specialist national average
- MIPS Final Score
- 97.6/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Specialist) - 97.6/100 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).
Jonathan Siegel, MD appears in the CMS NPPES registry as a Specialist provider holding MD credentials at 3601 SPRINGHILL BUSINESS PARK STE 201, Mobile, AL, 36608, with a listed phone of (251) 873-6192. NPI 1639110224 was issued on 06/08/2006.
Medicare Part D records for calendar year 2023 show 4,545 prescription claims written by this provider, covering 1,240 Medicare beneficiaries and totaling roughly $4.4 million in drug spend, split 32% brand-name and 68% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 97.6/100 for the 2023 performance year (Quality 86.5), compared with the national average of 83.1.
Specialist is a high-volume specialty nationwide, with 69,608 enrolled providers across 55 states and an average of 1,474 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 | 1639110224 |
|---|---|
| Specialty | Specialist |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 06/08/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
97.5814
Final Score
Avg: 83.1
86.5348
Quality
100
Promoting Interoperability
Reporting: Alternative Payment Model
Hospital and facility affiliations
Facilities where Jonathan Siegel, 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.
Gut PC
Mobile, 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 Jonathan Siegel, MD. Source: openpaymentsdata.cms.gov.
Total received
$2.8K
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 · Above average
Jonathan Siegel, MD - brand share 32.0%
Specialist average
32% brand-name claims vs 68% generic, on 4,545 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.
4,545
Total Claims
$4.4M
Total Drug Cost
1,240
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 7,797
- Total Day Supply
- 205,954
- Brand vs Generic
- 32% brand / 68% generic
- Brand Drug Cost
- $4.2M
- Generic Drug Cost
- $132K
- Antibiotic Claims
- 121
Patient Demographics
- Average Patient Age
- 70.0 years
- Avg HCC Risk Score
- 1.35
- Gender Split
- 66% female / 34% male
- Age Distribution
- <65: 210, 65-74: 681, 75-84: 311, 85+: 38
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Jonathan Siegel, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Pantoprazole Sodium
Pantoprazole Sodium
842 claims
- Omeprazole
Omeprazole
529 claims
- Linzess
Linzess
413 claims
- Famotidine 314
Famotidine
314 claims
- Dicyclomine Hcl 150
Dicyclomine Hcl
150 claims
- Clenpiq 127
Clenpiq
127 claims
- Trulance 122
Trulance
122 claims
- Ondansetron Hcl 114
Ondansetron Hcl
114 claims
| Drug | Claims |
|---|---|
| Pantoprazole Sodium | 842 |
| Omeprazole | 529 |
| Linzess Linaclotide | 413 |
| Famotidine | 314 |
| Dicyclomine Hcl | 150 |
| Clenpiq Sod Picosulf/Mag Ox/Citric Ac | 127 |
| Trulance Plecanatide | 122 |
| Ondansetron Hcl | 114 |
| Entyvio Vedolizumab | 91 |
| Stelara Ustekinumab | 76 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Specialist Overview
How Jonathan Siegel, MD fits within the Specialist landscape nationally.
69,608
Specialist Providers in US
55
States with Specialist
1,474
Avg Claims per Provider
Jonathan Siegel, MD's 4,545 claims are above the specialty average of 1,474.
Nearby Specialist Providers in Alabama
Other clinicians with the same primary specialty enrolled in Alabama, drawn from the same CMS NPPES roster as Siegel.
Dr. William Abernathy
M.D.
Montgomery, AL
Dr. Bernard Abi-Saleh
MD
Mobile, AL
Dr. Charles Adams
M.D.
Birmingham, AL
Dr. Mark Addison
M.D.
Cullman, AL
Dedrick Agee
Hoover, AL
Compare Specialist 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 Alabama medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Specialist 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
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Medical Specialties Explained
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Understanding Medicare Claims Data
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Frequently Asked Questions
What is Jonathan Siegel, MD's specialty? ▼
Jonathan Siegel, MD specializes in Specialist and practices in Mobile, Alabama. Credentials: MD.
How much does Jonathan Siegel, MD prescribe under Medicare Part D? ▼
In 2023, Jonathan Siegel, MD wrote 4,545 Medicare Part D claims totaling $4.4M in drug costs for 1,240 beneficiaries.
What is Jonathan Siegel, MD's Medicare quality score? ▼
Jonathan Siegel, MD has a CMS MIPS Final Score of 97.6/100 (Quality: 86.5). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Jonathan Siegel, MD located? ▼
Jonathan Siegel, MD is located at 3601 SPRINGHILL BUSINESS PARK STE 201, Mobile, AL, 36608. Phone: (251) 873-6192.
What is Jonathan Siegel, MD's NPI number? ▼
Jonathan Siegel, MD's National Provider Identifier (NPI) is 1639110224, issued on 06/08/2006.
Does Jonathan Siegel, MD prescribe more brand-name or generic drugs? ▼
Jonathan Siegel, MD's prescribing is 32% brand-name and 68% generic drugs by claim count, with $4.2M in brand drug costs.
How many Specialist providers are there in the US? ▼
There are 69,608 Specialist providers across 55 states in the US. The average Specialist provider writes 1,474 Medicare Part D claims per year.
What drugs does Jonathan Siegel, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Jonathan Siegel, MD's most frequently prescribed drugs include Pantoprazole Sodium, Omeprazole, Linzess. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Jonathan Siegel, MD accept Medicare? ▼
Jonathan Siegel, MD appears in CMS Medicare data with 4,545 Part D claims and 1,240 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Jonathan Siegel, MD's credentials? ▼
Jonathan Siegel, MD's NPI is 1639110224 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
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.