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TEJASWINI R. NAYAK M.D.
NPI 1609841303
Internal Medicine in Saint Charles, MO

Active since February 17, 2006PECOS EnrolledAccepts Medicare Assignment
1820 ZUMBEHL RD, SUITE 120-A, SAINT CHARLES, MO 63303(636) 928-1237(636) 928-0397 Get Directions Write a Review

NPPES record last updated: September 5, 2012. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Tejaswini R. Nayak M.d. NPPES

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

TEJASWINI R. NAYAK M.D. (NPI 1609841303) is an individual internal medicine provider in Saint Charles, Missouri, licensed in Missouri (2002015974) and active in the NPI registry since February 2006. She is enrolled in Medicare PECOS, is affiliated with Mercy Hospital St Louis, and is a graduate of Other (1997).

NPPES Registry Identity

NPI1609841303
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameTEJASWINI R. NAYAKCredential: M.D.
Location Address1820 ZUMBEHL RD, SUITE 120-ASaint Charles, MO 63303-2761
Mailing Address1820 Zumbehl Rd, Suite 120-aSaint Charles, MO 63303-2761 · (636) 928-1237 · Fax (636) 928-0397
Phone(636) 928-1237
Fax(636) 928-0397
Sole ProprietorNo
Medical School CMSOtherGraduated 1997
Enumeration DateFebruary 17, 2006
Last NPPES UpdateSeptember 5, 2012
✔ NPI 1609841303 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MO · 2002015974
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.
1820 ZUMBEHL RD, Saint Charles, MO 63303
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Other Identifiers 2

Medicare PIN907095280MO
Medicare UPINH95161

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Medica, UnitedHealthcare.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Tejaswini R. Nayak M.d. 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 ID4587657200
PECOS Enrollment IDI20040407000531
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 8

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.

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.
304 services119 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
89 services89 patients
Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
49 services47 patients
Influenza vaccine split virus, preservative free 90662
The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.
44 services42 patients
Administration of pneumococcal vaccine G0009
The pneumococcal vaccine helps protect against pneumococcal bacteria, which can cause severe infections like pneumonia and meningitis. The vaccine is given as an injection, typically in the arm. It's recommended for infants, older adults, and those with certain health conditions.
29 services29 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
23 services22 patients

Hospital Affiliations CMS Care Compare 3

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

Mercy Hospital St Louis

Acute Care Hospitals · Saint Louis, MO
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260020
Location615 New Ballas RoadSaint Louis, MO 63141 · St. Louis County
Emergency services Birthing friendly

Mercy Hospital South

Acute Care Hospitals · Saint Louis, MO
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260077
Location10010 Kennerly RoadSaint Louis, MO 63128 · St. Louis County
Emergency services

St Lukes Hospital

Acute Care Hospitals · Chesterfield, MO
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260179
Location232 S Woods Mill RdChesterfield, MO 63017 · St. Louis County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63303 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
$128.28 typical visit price
range $55.65 – $169.38
Typical copayment $32.07 (range $13.91 – $42.34)
Most-billed visit code 99204
Established Patient
$98.37 typical visit price
range $17.76 – $137.92
Typical copayment $24.59 (range $4.44 – $34.48)
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.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
6 suppliers25 claims53 services$6.60 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
1 supplier11 claims11 services$69.88 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 2

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

DR. PAMELA LATARSHA BUCHANAN M.D.
Emergency Medicine
1820 ZUMBEHL RD, SUITE 130-A
SAINT CHARLES, MO 63303
St. Charles County (636) 947-2334
BILAL OMAR QUADRI MD
Family Medicine
1820 ZUMBEHL RD
SAINT CHARLES, MO 63303
St. Charles County (636) 947-2334

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 Tejaswini Nayak's NPI number?

The NPI number for Tejaswini Nayak is 1609841303. It was assigned to this individual provider in the NPPES registry on February 17, 2006.

Where is Tejaswini Nayak located?

Tejaswini Nayak practices at 1820 Zumbehl Rd Suite 120-A, Saint Charles, MO 63303. The listed phone number is (636) 928-1237.

What is Tejaswini Nayak's specialty?

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

Is Tejaswini Nayak enrolled in Medicare?

Yes. Tejaswini Nayak 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.

What insurance does Tejaswini Nayak accept?

Health plans from Anthem Blue Cross and Blue Shield, Medica and UnitedHealthcare list Tejaswini Nayak 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 Tejaswini Nayak affiliated with any hospitals?

According to CMS data, Tejaswini Nayak is affiliated with Mercy Hospital St Louis, Mercy Hospital South and St Lukes Hospital.

When was this NPI record last updated?

The NPPES record for Tejaswini Nayak was last updated on September 5, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.