DR. AKSHIT GRIWAN MD
NPI 1629638671
Internal Medicine in Bristol, TN

Q: What is Akshit Griwan's NPI number?

The NPI number for Akshit Griwan is 1629638671. It was assigned to this individual provider in the NPPES registry on June 20, 2019.

Q: What is Akshit Griwan's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Akshit Griwan was last updated on September 1, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.

Active since June 20, 2019PECOS EnrolledAccepts Medicare Assignment

1 MEDICAL PARK BLVD, BRISTOL, TN 37620(423) 844-1121 Get Directions Write a Review

NPPES record last updated: September 1, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 1, 2022, Jun 20, 2019 (2 updates tracked since 2019).

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About Dr. Akshit Griwan Md NPPES

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

DR. AKSHIT GRIWAN MD (NPI 1629638671) is an individual internal medicine provider in Bristol, Tennessee, licensed in Tennessee (65323) and active in the NPI registry since June 2019. He is enrolled in Medicare PECOS, is affiliated with Wellmont Bristol Regional Medical Center, and is a graduate of Other (2018).

NPPES Registry Identity

NPI1629638671

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. AKSHIT GRIWANCredential: MD

Location Address1 MEDICAL PARK BLVDBristol, TN 37620-7430

Mailing Address1 Medical Park BlvdBristol, TN 37620-7430 · (423) 844-1121

Phone(423) 844-1121

Sole ProprietorNo

Medical School CMSOtherGraduated 2018

Enumeration DateJune 20, 2019

Last NPPES UpdateSeptember 1, 20222 updates tracked since enumeration

NPPES CertifiedSeptember 1, 2022

✔ NPI 1629638671 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in TN · 65323

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 ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

1 MEDICAL PARK BLVD, Bristol, TN 37620

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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

Dr. Akshit Griwan 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 ID5991181679

PECOS Enrollment IDI20221004000708

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 Reassignment

Medicare enrollment records show Akshit Griwan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Southeastern Physician Services PC

118 mi

Hospitalist

990 OAK RIDGE TPKE
Oak Ridge, TN 37830

Reassigned Medicare billing, Tennessee enrollment
1,085 clinicians in this Medicare group

NPI 1083835441 (865) 481-1000

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 6

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.

392 services172 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.

364 services212 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.

172 services161 patients

Critical care, first 30-74 minutes 99291

Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.

50 services31 patients

Advance care planning, first 30 minutes 99497

Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.

43 services38 patients

Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and G0180

This is a service where a doctor or authorized practitioner certifies that you require Medicare-covered home health services. They will communicate with the home health agency and review reports on your health status to ensure you receive appropriate care. This does not involve an in-person visit.

19 services19 patients

Hospital Affiliations CMS Care Compare 3

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

Wellmont Bristol Regional Medical Center

Acute Care Hospitals · Bristol, TN

1/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number440012

LocationOne Medical Park BlvdBristol, TN 37620 · Sullivan County

Emergency services Birthing friendly

Wellmont Holston Valley Medical Center

Acute Care Hospitals · Kingsport, TN

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number440017

Location130 West Ravine RoadKingsport, TN 37662 · Sullivan County

Emergency services

Johnson City Medical Center

Acute Care Hospitals · Johnson City, TN

1/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number440063

Location400 N State Of Franklin RdJohnson City, TN 37604 · Washington County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37620 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

$121.80 typical visit price

range $52.64 – $160.89

Typical copayment $30.45 (range $13.16 – $40.22)

Most-billed visit code 99204

Established Patient

$93.60 typical visit price

range $16.72 – $131.41

Typical copayment $23.40 (range $4.18 – $32.85)

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 20

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

CASSONDRA NICHOLE COMPTON CRNA

Nurse Anesthetist, Certified Registered

1 MEDICAL PARK BLVD
BRISTOL, TN 37620

Sullivan County (423) 844-2686

DAVID R HUDGENS M.D.

Pathology (Anatomic Pathology & Clinical Pathology)

1 MEDICAL PARK BLVD
BRISTOL, TN 37620

Sullivan County (423) 844-3220

DR. JEAN MARIE MANCINI M.D.

Internal Medicine

1 MEDICAL PARK BLVD, STE 450W
BRISTOL, TN 37620

Sullivan County (423) 968-3713

THOMAS A KITTS MD

Emergency Medicine

1 MEDICAL PARK BLVD
BRISTOL, TN 37620

Sullivan County (423) 844-2100

LAURA ANN ELLER AGACNP

Nurse Practitioner (Critical Care Medicine)

1 MEDICAL PARK BLVD
BRISTOL, TN 37620

Sullivan County (423) 844-1121

DR. WALTER DAVIS ARNOLD JR. MD

Internal Medicine

1 MEDICAL PARK BLVD
BRISTOL, TN 37620

Sullivan County (423) 282-1480

DR. KARL E LAWRENCE M.D.

Internal Medicine

1 MEDICAL PARK BLVD
BRISTOL, TN 37620

Sullivan County (423) 844-1121

DR. MICHAEL WAYNE RENTZ MD

Pathology (Anatomic Pathology & Clinical Pathology)

1 MEDICAL PARK BLVD
BRISTOL, TN 37620

Sullivan County (423) 844-3220

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 Akshit Griwan's NPI number?

The NPI number for Akshit Griwan is 1629638671. It was assigned to this individual provider in the NPPES registry on June 20, 2019.

Where is Akshit Griwan located?

Akshit Griwan practices at 1 Medical Park Blvd, Bristol, TN 37620. The listed phone number is (423) 844-1121.

What is Akshit Griwan's specialty?

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

Is Akshit Griwan enrolled in Medicare?

Yes. Akshit Griwan 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 organization bills Medicare for Akshit Griwan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Akshit Griwan reassigns Medicare benefits to Southeastern Physician Services PC (Oak Ridge, TN). The 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 Akshit Griwan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Akshit Griwan affiliated with any hospitals?

According to CMS data, Akshit Griwan is affiliated with Wellmont Bristol Regional Medical Center, Wellmont Holston Valley Medical Center and Johnson City Medical Center.

When was this NPI record last updated?

The NPPES record for Akshit Griwan was last updated on September 1, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.