Bertha S. Ayi, M.D. FACP
Infectious Disease Physician · Sioux Falls, SD
Bertha S. Ayi, M.D. FACP is an infectious disease physician with a practice address in Sioux Falls, South Dakota, and NPI 1083670343, issued on Apr 25, 2006. Check the license on the South Dakota Board of Medical and Osteopathic Examiners; the Medicare figures below come from public CMS files.
- Name
- Bertha S. Ayi
- Credential
- M.D. FACP
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License numbers
- R3268 TX
35294 IA
22523 NE
Self-reported in NPPES; status is on the state search - Practice location
- 1205 S Grange Ave Ste 401, Sioux Falls, SD 57105
- Phone
- (712) 226-4437
- Enumerated
- Apr 25, 2006
- Record last updated
- Jun 5, 2026
- Medicaid IDs
- 2442897 IA
300028956 IN - Medicare enrollment
- Enrolled (PECOS I20201005002618); may accept Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 24 in South Dakota → Look up another NPI →
Also registered at 1205 S Grange Ave Ste 401
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Emad Abu Sitta, M.DInfectious Disease Physician1194165977
- Annalisa Cunningham, FNPFamily Nurse Practitioner1730497561
- Michael Whisler, PA-CPhysician Assistant1902560618
Verify Bertha S. Ayi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Dakota Board of Medical and Osteopathic ExaminersCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
54% fewer Medicare Part D claims than the average infectious disease physician in 2024
319 Medicare Part D claims for 85 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Cefazolin Sodium33 claims
- Azithromycin24 claims
- Ciprofloxacin Hcl22 claims
- Ceftriaxone21 claims
- Cephalexin18 claims
- Daptomycin17 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bertha S. Ayi among 24 infectious disease physician records in South Dakota
Bertha S. Ayi, M.D. FACP is one of 24 infectious disease physician records with a practice address in South Dakota. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 54% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated1997 · median 2005 among the 18 with a school on file
- Record last updated2026 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in South Dakota
There are 24 infectious disease physician records in South Dakota.
All 24 in South Dakota → Every provider in Sioux Falls → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Emad Abu Sitta, M.DSioux Falls, SD 571051194165977
- Miguel Cervera Hernandez, M.D.Sioux Falls, SD 571051093166209
- Gerard David, MDSioux Falls, SD 571051831145283
- Wendell Hoffman, MDSioux Falls, SD 571051265485478
- Jennifer Hsu, M.D.Sioux Falls, SD 571051801844329
- Nirmal Muthukumarasamy, MDSioux Falls, SD 571051518528611
- Mary Nettleman, M.D.Sioux Falls, SD 571051699702613
- Veronica Soler, MDSioux Falls, SD 571051497749675
Common questions
What is Bertha S. Ayi, M.D. FACP's NPI number?
Bertha S. Ayi, M.D. FACP's National Provider Identifier (NPI) is 1083670343, issued on Apr 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Bertha S. Ayi, M.D. FACP located?
The NPPES record lists a practice address at 1205 S Grange Ave Ste 401, Sioux Falls, SD, 57105. Phone: (712) 226-4437. Providers update this record themselves, so call before visiting.
How can I verify Bertha S. Ayi, M.D. FACP's license?
Search the South Dakota Board of Medical and Osteopathic Examiners at https://www.sdbmoe.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Bertha S. Ayi, M.D. FACP prescribe under Medicare Part D?
In 2024, Bertha S. Ayi, M.D. FACP had 319 Medicare Part D claims for 85 beneficiaries; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.