A. THOMAS SIACHOS M.D. NPI 1598757171

NPI Information

  • NPI: 1598757171
  • Provider Name: A. THOMAS SIACHOS, M.D.
  • Classification: Internal Medicine - 207RC0000X
  • Specialization: Cardiovascular Disease
  • Entity Type: Individual
  • PECOS Registration: Yes
  • Address: 2 INNOVATION DR
    SUITE 400
    GREENVILLE, SC
    ZIP 29607
  • Phone: (864) 235-7665

Map and Directions

Get Directions

NPI Details

A. Thomas Siachos, M.D. is a cardiovascular disease internal medicine in Greenville, SC with 34 years of experience. The provider is 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. A. Thomas Siachos, M.D. NPI is 1598757171. The provider is registered as an individual entity type.

The NPPES NPI record indicates the provider is a male.

The provider's business location address is:

2 INNOVATION DR
SUITE 400
GREENVILLE, SC
ZIP 29607-261
Phone: (864) 235-7665
Fax: (864) 233-5971

The NPI 1598757171 is registered in the Medicare Provider, Enrollment, Chain and Ownership System (PECOS). The provider is legally eligible to order and refer Part B (Clinical Laboratory and Imaging), Durable Medical Equipment, Part A Home Health Agency (HHA), Power Mobility Devices.

The following top HCPCS codes were publicly reported for this provider under the Medicare program for the year 2016. The reported codes are based on the top codes for each available Medicare specialty, excluding evaluation and management codes.

  • Established patient office or other outpatient visit, 30-39 minutes (HCPCS:99214)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (HCPCS:93000)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (HCPCS:93010)
  • Blood test, clotting time (HCPCS:85610)
  • Anticoagulant management of patient taking warfarin (HCPCS:93793)
  • Evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days (HCPCS:93296)
  • Injection, regadenoson, 0.1 mg (HCPCS:J2785)
  • Follow-up hospital inpatient care per day, typically 25 minutes (HCPCS:99232)
  • Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days (HCPCS:93294)
  • Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (HCPCS:93306)
  • Technetium tc-99m sestamibi, diagnostic, per study dose (HCPCS:A9500)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (HCPCS:99152)
  • Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (HCPCS:93306)
  • Initial hospital inpatient care per day, typically 70 minutes (HCPCS:99223)
  • Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician (HCPCS:93015)
  • Insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist (HCPCS:93458)
  • Ultrasound of both sides of head and neck blood flow (HCPCS:93880)
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (HCPCS:78452)
  • Ultrasound of heart (HCPCS:93307)
  • Evaluation of cardiac rhythm monitor system, remote up to 30 days (HCPCS:93298)
  • Interrogation device evaluation(s), (remote) up to 30 days; implantable cardiovascular physiologic monitor system, implantable loop recorder system, or subcutaneous cardiac rhythm monitor system, remote data acquisition(s), receipt of transmissions and tec (HCPCS:G2066)
  • New patient office or other outpatient visit, 60-74 minutes (HCPCS:99205)
  • Injection, perflutren lipid microspheres, per ml (HCPCS:Q9957)
  • Evaluation of single, dual, or multiple lead implantable defibrillator system, remote up to 90 days (HCPCS:93295)
  • Evaluation of single, dual, multiple lead or leadless pacemaker system (HCPCS:93288)
  • Heart rhythm review, and interpretation of continous external ekg over more than 48 hours up to 7 days (HCPCS:93244)
  • Programming of dual lead pacemaker system (HCPCS:93280)
  • Insertion of stents with balloon dilation of coronary artery or branch, single artery or branch (HCPCS:92928)
  • Hospital discharge day management, 30 minutes or less (HCPCS:99238)
  • Heart rhythm recording continous external ekg over more than 48 hours up to 7 days (HCPCS:93242)
  • External shock to heart to regulate heart beat (HCPCS:92960)
  • Heart rhythm review and interpretation of continous external ekg over 8-15 days (HCPCS:93248)
  • Electrocardiogram (ecg) up to 30 days continuous with review and report by health care professional (HCPCS:93228)
  • Established patient office or other outpatient visit, 20-29 minutes (HCPCS:99213)
  • Insertion of tube in left lower heart chamber, coronary artery and bypass graft for diagnosis with review by radiologist (HCPCS:93459)
  • Heart rhythm recording of continous external ekg over 8-15 days (HCPCS:93246)
  • Ultrasound of heart, follow-up (HCPCS:93308)
  • Ultrasound of heart with color-depicted blood flow, rate and valve function (HCPCS:93325)
  • New patient office or other outpatient visit, 45-59 minutes (HCPCS:99204)
  • Hospital observation care on day of discharge (HCPCS:99217)
  • Initial hospital observation care per day, typically 70 minutes (HCPCS:99220)
  • Insertion of pacemaker and upper and lower heart chamber electrode (HCPCS:33208)
  • Ultrasound of heart with color-depicted blood flow, rate and valve function (HCPCS:93325)
  • Electrocardiogram (ecg) 2-day continuous (HCPCS:93225)
  • Electrocardiogram (ecg) 2-day continuous with review by health care professional (HCPCS:93227)
  • Ultrasound of heart with probe in esophagus, with report (HCPCS:93312)
  • Ultrasound of heart blood flow, valves and chambers (HCPCS:93320)
  • Ultrasound of heart, follow-up (HCPCS:93308)
  • Removal and replacement of dual lead permanent pacemaker (HCPCS:33228)
  • Programming of dual lead pacemaker system (HCPCS:93280)
  • Ultrasound evaluation of heart blood vessel during diagnosis or treatment, initial vessel (HCPCS:93571)
  • Transitional care management services for problem of moderate complexity (HCPCS:99495)
  • Coronary angioplasty and stenting (HCPCS:NAN05)
  • Pacemaker insertion or repair (HCPCS:NAN10)

The enumeration date for this NPI number is 8/18/2005 and was last updated on 2/12/2010.

Taxonomy Codes

The NPI record includes the healthcare provider taxonomy classification, state license number and state of licensure. The following information regarding the scope of practice of this provider is available:

No. Taxonomy Code Taxonomy Clasification Taxonomy Specialization License Number License State Primary
1207RC0000XInternal MedicineCardiovascular Disease21670SOUTH CAROLINAYes

Other Identifiers

The following information regarding additional identifiers associated to this NPI record includes the other identifier number, identifier type, identifier state and issuer.

No. Other Provider Identifier Other Provider Identifier Type Other Provider Identifier State Other Provider Identifier Issuer
1AA0334MEDICARE UPINSOUTH CAROLINA
2GP0975MEDICAIDSOUTH CAROLINA
38157MEDICARE PINSOUTH CAROLINA
44695MEDICARE ID-TYPE UNSPECIFIEDSOUTH CAROLINA

What is NPI?

NPI stands for National Provider Identifier. The NPI is a 10-digit identification number that is completely unique. The NPI number by itself does not contain any identifiable information such as a provider’s speciality or location. The NPI is assigned to individuals or organizacions for their lifespan and it is independent of key provider information type updates like a change of practices, location or speciality.

This page was last updated on: 11/21/2025

NPI Synchronization or Removal

All materials and services on this site are provided on an "as is" and "as available" basis without warranty of any kind. The NPI record is maintained by the National Plan & Provider Enumeration System (NPPES) and anyone may request this information and other NPPES health care provider data from HHS under The Freedom of Information Act (FOIA), Title 5 of the United States Code, section 552. To update the NPI records please contact the NPPES.