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THARANI SUNDARARAJAN MD
NPI 1376102285
Internal Medicine in Cumming, GA

Active since June 13, 2019PECOS EnrolledAccepts Medicare Assignment
1800 NORTHSIDE FORSYTH DR STE 40, CUMMING, GA 30041(678) 947-6440(678) 513-4764 Get Directions Write a Review

NPPES record last updated: April 8, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 8, 2025, Jul 10, 2024, Apr 19, 2024 and 2 more (5 updates tracked since 2019).

About Tharani Sundararajan Md NPPES

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

THARANI SUNDARARAJAN MD (NPI 1376102285) is an individual internal medicine provider in Cumming, Georgia, licensed in Illinois (036.159188) and active in the NPI registry since June 2019. She is enrolled in Medicare PECOS, is affiliated with Northside Hospital Forsyth, and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1376102285
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameTHARANI SUNDARARAJANCredential: MD
Location Address1800 NORTHSIDE FORSYTH DR STE 40Cumming, GA 30041-8416
Mailing Address4300 N Point Pkwy Ste 300Alpharetta, GA 30022-4102
Phone(678) 947-6440
Fax(678) 513-4764
Sole ProprietorNo
Medical School CMSOtherGraduated 2012
Enumeration DateJune 13, 2019
Last NPPES UpdateApril 8, 20255 updates tracked since enumeration
NPPES CertifiedApril 8, 2025
✔ NPI 1376102285 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Licenses✔ Licensed in IL · 036.159188✔ Licensed in GA · 98858✔ Licensed in IL · 125074752
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedHospitalistTaxonomy 208M00000X · License 036.159188 (IL)
1800 NORTHSIDE FORSYTH DR STE 40, Cumming, GA 30041
Open in Google Maps ↗

Secondary Practice Locations 3

Location 1751 N Rutledge St Ste 1100Springfield, IL 62702-4968 · Phone (217) 545-8000
Location 21200 Northside Forsyth DrCumming, GA 30041-7659 · Phone (770) 844-3200 · Fax (770) 844-3227
Location 3701 N 1st StSpringfield, IL 62702-3757 · Phone (217) 545-8000 · Fax (217) 545-4735

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Alliant Health Plans, Inc., Ambetter from Absolute Total Care, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Tharani Sundararajan Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3678807146
PECOS Enrollment IDI20240611002351
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.

Medicare Billing Reassignments

4

Medicare enrollment records show Tharani Sundararajan reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Southeast Medical Group, P.C.
10 mi
Family Medicine
3905 BROOKSIDE PKWY STE 300
Alpharetta, GA 30022
  • Reassigned Medicare billing, Georgia enrollment
  • 240 clinicians in this Medicare group
NPI 1235296054 (770) 442-1911
North Atlanta Professional Services LLC
22 mi
Psychologist
1000 JOHNSON FERRY RD NE
Atlanta, GA 30342
  • Reassigned Medicare billing, Georgia enrollment
  • 783 clinicians in this Medicare group
NPI 1316959869 (855) 709-4535
Board Of Trustees Of Southern Illinois University
493 mi
Primary Care
520 N 4TH ST
Springfield, IL 62702
  • Reassigned Medicare billing, Illinois enrollment
  • 262 clinicians in this Medicare group
NPI 1396097960 (217) 757-8100
Siu Physicians & Surgeons, Inc
493 mi
Endocrinology, Diabetes & Metabolism
201 E MADISON ST STE 328
Springfield, IL 62702
  • Reassigned Medicare billing, Illinois enrollment
  • 645 clinicians in this Medicare group
NPI 1558385989 (217) 545-8000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 4

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 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.
125 services40 patients
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.
41 services26 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
25 services24 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.
23 services22 patients

Hospital Affiliations CMS Care Compare

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

Northside Hospital Forsyth

Acute Care Hospitals · Cumming, GA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number110005
Location1200 Northside Forsyth DriveCumming, GA 30041 · Forsyth County
Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 30041 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
$130.64 typical visit price
range $56.84 – $172.43
Typical copayment $32.66 (range $14.21 – $43.10)
Most-billed visit code 99204
Established Patient
$100.20 typical visit price
range $18.22 – $140.40
Typical copayment $25.05 (range $4.55 – $35.10)
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.

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 Tharani Sundararajan's NPI number?

The NPI number for Tharani Sundararajan is 1376102285. It was assigned to this individual provider in the NPPES registry on June 13, 2019.

Where is Tharani Sundararajan located?

Tharani Sundararajan practices at 1800 Northside Forsyth Dr Ste 40, Cumming, GA 30041. The listed phone number is (678) 947-6440.

What is Tharani Sundararajan's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Tharani Sundararajan enrolled in Medicare?

Yes. Tharani Sundararajan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Tharani Sundararajan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tharani Sundararajan reassigns Medicare benefits to 4 organizations: Southeast Medical Group, P.C. (Alpharetta, GA), North Atlanta Professional Services LLC (Atlanta, GA), Board Of Trustees Of Southern Illinois University (Springfield, IL) and Siu Physicians & Surgeons, Inc (Springfield, IL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Tharani Sundararajan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Tharani Sundararajan accept?

Health plans from Alliant Health Plans, Inc., Ambetter Health, Ambetter from Absolute Total Care, Ambetter of Alabama and Ambetter of North Carolina and 2 other insurers list Tharani Sundararajan 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 Tharani Sundararajan affiliated with any hospitals?

According to CMS data, Tharani Sundararajan is affiliated with Northside Hospital Forsyth.

When was this NPI record last updated?

The NPPES record for Tharani Sundararajan was last updated on April 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.