DR. ASHWIN KRISHNAN THIAGARAJASUBRAMANIAN M.D.
NPI 1134562879
Internal Medicine - Cardiovascular Disease in Phoenixville, PA

Q: What is Ashwin Thiagarajasubramanian's NPI number?

The NPI number for Ashwin Thiagarajasubramanian is 1134562879. It was assigned to this individual provider in the NPPES registry on April 11, 2013. The provider is also known as Dr. Ashwin Krishnan Thiagarajasubramanian M.D..

Q: What is Ashwin Thiagarajasubramanian's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Active since April 11, 2013PECOS EnrolledAccepts Medicare Assignment

824 MAIN ST STE 306, PHOENIXVILLE, PA 19460(610) 983-1941(610) 983-1945 Get Directions Write a Review

NPPES record last updated: August 13, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Aug 13, 2025, Jul 9, 2020 (2 updates tracked since 2020).

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About Dr. Ashwin Krishnan Thiagarajasubramanian M.d. NPPES

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

DR. ASHWIN KRISHNAN THIAGARAJASUBRAMANIAN M.D. (NPI 1134562879) is an individual cardiovascular disease provider in Phoenixville, Pennsylvania, licensed in Pennsylvania (MD466255) and active in the NPI registry since April 2013. He is enrolled in Medicare PECOS, is affiliated with Reading Hospital, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1134562879

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameDR. ASHWIN KRISHNAN THIAGARAJASUBRAMANIANCredential: M.D.

Location Address824 MAIN ST STE 306Phoenixville, PA 19460-4478

Mailing AddressPo Box 13579Reading, PA 19612-3579 · (484) 628-1324

Phone(610) 983-1941

Fax(610) 983-1945

Sole ProprietorNo

Medical School CMSOhio State University College Of MedicineGraduated 2013

Enumeration DateApril 11, 2013

Last NPPES UpdateAugust 13, 20252 updates tracked since enumeration

NPPES CertifiedAugust 13, 2025

✔ NPI 1134562879 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

License✔ Licensed in PA · MD466255

Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

824 MAIN ST STE 306, Phoenixville, PA 19460

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Other Names 1

Professional Name (2)Dr. Ashwin Krishnan Thiagarajasubramanian M.d.

Secondary Practice Locations 2

Location 1530 South StGreensburg, PA 15601-2775 · Phone (724) 689-1354

Location 24201 Saint Antoine St, UHC-2EDetroit, MI 48201-2153 · Phone (313) 745-4525

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter Health, Ambetter Health of Delaware.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

Dr. Ashwin Krishnan Thiagarajasubramanian 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 ID5496057382

PECOS Enrollment IDI20191212000264

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 14

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.

117 services87 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.

112 services110 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.

69 services46 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician 93016

An exercise or drug-induced heart stress test with ECG involves monitoring your heart's activity while it's under stress, either from exercise or medication. A doctor supervises the entire procedure to ensure safety and accuracy in results. This test helps detect heart problems.

50 services50 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician 93018

An exercise or drug-induced heart stress test with ECG is a procedure to assess how your heart functions under stress. It can involve exercising or medication to make your heart work harder while an ECG records its activity. A physician reviews the results.

50 services50 patients

Nuclear medicine studies of heart muscle at rest and with stress and spect 78452

Nuclear medicine studies of the heart involve two parts: rest and stress. During rest, images are taken of your heart at ease. During stress, images are taken after exercise or medication-induced stress. SPECT is a special imaging technique providing 3D pictures of your heart, helping identify any issues.

44 services44 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.

41 services40 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.

26 services19 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

24 services20 patients

Ultrasound of heart with color-depicted blood flow, rate and valve function 93325

An ultrasound of the heart, also known as an echocardiogram, uses sound waves to create pictures of your heart. It shows the structure, movement, and blood flow within your heart. This helps assess the heart's health and function, including the valves and rate.

22 services22 patients

Ultrasound of heart with probe in esophagus, with report 93312

This procedure, called a transesophageal echocardiogram, uses a small probe passed into your esophagus to capture detailed images of your heart. The report provides information about your heart's structure and function.

19 services19 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.

18 services17 patients

Ultrasound of heart, follow-up 93308

A follow-up ultrasound of the heart, also known as an echocardiogram, is a non-invasive test that uses sound waves to create images of your heart. It helps doctors monitor your heart's function and structures after initial assessment or treatment.

13 services13 patients

Ultrasound of heart blood flow, valves and chambers, follow-up 93321

This procedure, an echocardiogram, uses sound waves to create images of your heart. It aids in assessing your heart's blood flow, chambers, and valves. It's a follow-up procedure, ensuring that your heart is functioning properly post-treatment.

11 services11 patients

Hospital Affiliations CMS Care Compare 5

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

Reading Hospital

Acute Care Hospitals · West Reading, PA

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390044

Location420 S 5th AvenueWest Reading, PA 19611 · Berks County

Emergency services Birthing friendly

Pottstown Hospital

Acute Care Hospitals · Pottstown, PA

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390123

Location1600 East High StreetPottstown, PA 19464 · Montgomery County

Emergency services

Phoenixville Hospital

Acute Care Hospitals · Phoenixville, PA

3/5 CMS rating

OwnershipProprietary

CMS Certification Number390127

Location140 Nutt RoadPhoenixville, PA 19460 · Chester County

Emergency services Birthing friendly

Excela Health Westmoreland Regional Hospital

Acute Care Hospitals · Greensburg, PA

3/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number390145

Location532 West Pittsburgh StreetGreensburg, PA 15601 · Westmoreland County

Emergency services Birthing friendly

Excela Health Latrobe Hospital

Acute Care Hospitals · Latrobe, PA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390219

LocationOne Mellon WayLatrobe, PA 15650 · Westmoreland County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 19460 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

$137.17 typical visit price

range $59.88 – $180.99

Typical copayment $34.29 (range $14.97 – $45.24)

Most-billed visit code 99204

Established Patient

$74.47 typical visit price

range $19.30 – $147.29

Typical copayment $18.61 (range $4.82 – $36.82)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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Other Providers at the Same Location NPPES 9

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

TETIANA LYUBOVICH

Nurse Practitioner