NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1891088985 M.D.
Verify on CMS → Abby Abisogun, M.D.
Internal Medicine Physician in Savannah, Georgia.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 172,858 in Internal Medicine 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
343
Medicare Part D claims · 40 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
24%
generic claims · 70% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$298.81
15 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
Abby Abisogun, M.D. filed 343 Medicare Part D claims in 2023 as a Internal Medicine Physician in Savannah, Georgia, prescribing 24% generic.
- 343
- Part D claims, 2023
- 24%
- generic prescribing
- $298.81
- 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.
Abby Abisogun, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
343 Top 43% higher than 57% of 1,370,886 prescribers
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.
Source CMS Medicare Part D Prescriber Public Use File · 2023
◑
Board-eligible specialty (heuristic, not verified)
Abby Abisogun, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Abby Abisogun, M.D.?
Quality data not reportedPrimary specialty
Internal Medicine Physician
Medicare Part D claims
343 87% vs specialty avg
Specialty distribution in Georgia
How Internal Medicine Physician compares to other specialties among Georgia 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 Internal Medicine 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).
Abby Abisogun, M.D. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding M.D. credentials at 7505 WATERS AVE STE A9, Savannah, GA, 31406, with a listed phone of (912) 483-9313. NPI 1891088985 was issued on 05/23/2011.
Medicare Part D records for calendar year 2023 show 343 prescription claims written by this provider, covering 40 Medicare beneficiaries and totaling roughly $216K in drug spend, split 70% brand-name and 24% generic by claim count.
Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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 | 1891088985 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 05/23/2011 |
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 Abby Abisogun, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$299
Largest payer
Boston Scientific 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.
Brand vs generic prescribing mix · Brand-heavy
Abby Abisogun, M.D. - brand share 70.0%
Internal Medicine Physician average
70% brand-name claims vs 24% generic, on 343 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.
343
Total Claims
$216K
Total Drug Cost
40
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 559
- Total Day Supply
- 16,501
- Brand vs Generic
- 70% brand / 24% generic
- Brand Drug Cost
- $203K
- Generic Drug Cost
- $1K
Patient Demographics
- Average Patient Age
- 72.5 years
- Avg HCC Risk Score
- 1.14
- Gender Split
- 70% female / 30% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Abby Abisogun, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Mounjaro
Mounjaro
46 claims
- Trulicity
Trulicity
27 claims
- Ozempic
Ozempic
26 claims
- Synthroid
Synthroid
25 claims
- Levothyroxine Sodium
Levothyroxine Sodium
22 claims
- Jardiance 14
Jardiance
14 claims
- Rybelsus 14
Rybelsus
14 claims
- Spironolactone 14
Spironolactone
14 claims
| Drug | Claims |
|---|---|
| Mounjaro Tirzepatide | 46 |
| Trulicity Dulaglutide | 27 |
| Ozempic Semaglutide | 26 |
| Synthroid Levothyroxine Sodium | 25 |
| Levothyroxine Sodium | 22 |
| Jardiance Empagliflozin | 14 |
| Rybelsus Semaglutide | 14 |
| Spironolactone | 14 |
| Tresiba Flextouch U-100 Insulin Degludec | 14 |
| Methimazole | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Internal Medicine Physician Overview
How Abby Abisogun, M.D. fits within the Internal Medicine Physician landscape nationally.
172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider
Abby Abisogun, M.D.'s 343 claims are below the specialty average of 2,716.
Nearby Internal Medicine Physician Providers in Georgia
Other clinicians with the same primary specialty enrolled in Georgia, drawn from the same CMS NPPES roster as Abisogun.
Dr. Ugochi Abazie
M.D
Riverdale, GA
Dr. Muhammad Abbasi
M.D.
Covington, GA
Rahat Abbasi
Augusta, GA
Dr. Diane Abby Burr
D.O.
Carrollton, GA
Dr. Bsmah Abdalslam
M.D
Austell, GA
Compare Internal Medicine 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 Georgia medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Internal Medicine 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 Abby Abisogun, M.D.'s specialty? ▼
Abby Abisogun, M.D. specializes in Internal Medicine Physician and practices in Savannah, Georgia. Credentials: M.D..
How much does Abby Abisogun, M.D. prescribe under Medicare Part D? ▼
In 2023, Abby Abisogun, M.D. wrote 343 Medicare Part D claims totaling $216K in drug costs for 40 beneficiaries.
Where is Abby Abisogun, M.D. located? ▼
Abby Abisogun, M.D. is located at 7505 WATERS AVE STE A9, Savannah, GA, 31406. Phone: (912) 483-9313.
What is Abby Abisogun, M.D.'s NPI number? ▼
Abby Abisogun, M.D.'s National Provider Identifier (NPI) is 1891088985, issued on 05/23/2011.
Does Abby Abisogun, M.D. prescribe more brand-name or generic drugs? ▼
Abby Abisogun, M.D.'s prescribing is 70% brand-name and 24% generic drugs by claim count, with $203K in brand drug costs.
How many Internal Medicine Physician providers are there in the US? ▼
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does Abby Abisogun, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Abby Abisogun, M.D.'s most frequently prescribed drugs include Mounjaro, Trulicity, Ozempic. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Abby Abisogun, M.D. accept Medicare? ▼
Abby Abisogun, M.D. appears in CMS Medicare data with 343 Part D claims and 40 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Abby Abisogun, M.D.'s credentials? ▼
Abby Abisogun, M.D.'s NPI is 1891088985 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.
- 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.