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BERTHA S. AYI M.D. FACP
NPI 1083670343
Internal Medicine - Infectious Disease in Sioux Falls, SD

Active since April 25, 2006PECOS Enrolled
1205 S GRANGE AVE STE 401, SIOUX FALLS, SD 57105(712) 226-4437 Get Directions Write a Review

NPPES record last updated: June 5, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jun 5, 2026, Oct 10, 2025, Nov 5, 2019 and 1 more (4 updates tracked since 2019).

About Bertha S. Ayi M.d. Facp NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

BERTHA S. AYI M.D. FACP (NPI 1083670343) is an individual infectious disease provider in Sioux Falls, South Dakota, licensed in Texas (R3268) and active in the NPI registry since April 2006. She is enrolled in Medicare PECOS, is affiliated with Essentia Health St Marys - Detroit Lakes, and maintains a secondary practice location in Tyler.

NPPES Registry Identity

NPI1083670343
Entity TypeIndividualFemale
Primary Taxonomy207RI0200X
Provider Legal NameBERTHA S. AYICredential: M.D. FACP
Location Address1205 S GRANGE AVE STE 401Sioux Falls, SD 57105-0410
Mailing AddressPo Box 846098Dallas, TX 75284-6098 · (903) 324-6400
Phone(712) 226-4437
Sole ProprietorYes
Medical School CMSOtherGraduated 1997
Enumeration DateApril 25, 2006
Last NPPES UpdateJune 5, 20264 updates tracked since enumeration
NPPES CertifiedJune 5, 2026
✔ NPI 1083670343 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
Licenses✔ Licensed in TX · R3268✔ Licensed in NE · 22523✔ Licensed in IA · 35294
Definition
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.
1205 S GRANGE AVE STE 401, Sioux Falls, SD 57105
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Secondary Practice Location 1

Location 1800 E Dawson StTyler, TX 75701-2036 · Phone (903) 606-5149

Other Identifiers 2

Medicaid2442897IA
Medicaid300028956IN

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross Blue Shield of North Dakota, Medica, Sanford Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Bertha S. Ayi M.d. Facp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID8022081223
PECOS Enrollment IDI20201005002618
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 7

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
221 services100 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
215 services108 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
134 services125 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
61 services50 patients
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
18 services17 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
16 services16 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Essentia Health St Marys - Detroit Lakes

Acute Care Hospitals · Detroit Lakes, MN
OwnershipVoluntary non-profit - Church
CMS Certification Number240101
Location1027 Washington AveDetroit Lakes, MN 56501 · Becker County
Birthing friendly

Essentia Health

Acute Care Hospitals · Fargo, ND
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number350070
Location3000 32nd Ave SouthFargo, ND 58104 · Cass County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 57105 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$126.78 typical visit price
range $55.52 – $167.23
Typical copayment $31.69 (range $13.88 – $41.80)
Most-billed visit code 99204
Established Patient
$97.88 typical visit price
range $18.08 – $137.08
Typical copayment $24.47 (range $4.52 – $34.27)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

EMAD M A ABU SITTA M.D
Internal Medicine (Infectious Disease)
1205 S GRANGE AVE STE 401
SIOUX FALLS, SD 57105
Minnehaha County (605) 328-8120
ANNALISA KRISTINE CUNNINGHAM FNP
Nurse Practitioner (Family)
1205 S GRANGE AVE STE 401
SIOUX FALLS, SD 57105
Minnehaha County (605) 312-8350
MR. MICHAEL DAVID WHISLER PA-C
Physician Assistant
1205 S GRANGE AVE STE 401
SIOUX FALLS, SD 57105
Minnehaha County (605) 328-8120

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Bertha Ayi's NPI number?

The NPI number for Bertha Ayi is 1083670343. It was assigned to this individual provider in the NPPES registry on April 25, 2006.

Where is Bertha Ayi located?

Bertha Ayi practices at 1205 S Grange Ave Ste 401, Sioux Falls, SD 57105. The listed phone number is (712) 226-4437.

What is Bertha Ayi's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Is Bertha Ayi enrolled in Medicare?

Yes. Bertha Ayi is registered in the Medicare PECOS enrollment system.

What insurance does Bertha Ayi accept?

Health plans from Blue Cross Blue Shield of North Dakota, Medica and Sanford Health Plan list Bertha Ayi as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Bertha Ayi affiliated with any hospitals?

According to CMS data, Bertha Ayi is affiliated with Essentia Health St Marys - Detroit Lakes and Essentia Health.

When was this NPI record last updated?

The NPPES record for Bertha Ayi was last updated on June 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.