GREGORY MORRIS GIESLER MD NPI 1477518454

NPI Information

  • NPI: 1477518454
  • Provider Name: GREGORY MORRIS GIESLER, MD
  • Classification: Internal Medicine - 207RC0000X
  • Specialization: Cardiovascular Disease
  • Entity Type: Individual
  • PECOS Registration: Yes
  • Address: 55 E CALIFORNIA BLVD
    3RD FLOOR
    PASADENA, CA
    ZIP 91105
  • Phone: (626) 793-1227

Map and Directions

Get Directions

NPI Details

Gregory Morris Giesler, MD is a cardiovascular disease internal medicine in Pasadena, CA with 27 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. Gregory Morris Giesler, MD NPI is 1477518454. The provider is registered as an individual entity type.

The NPPES NPI record indicates the provider is a male.

Education
Medical School: CHICAGO COLLEGE OF MEDICINE AND SURGERY
Graduation Year:1999

The provider's business location address is:

55 E CALIFORNIA BLVD
3RD FLOOR
PASADENA, CA
ZIP 91105-944
Phone: (626) 793-1227
Fax: (626) 793-3794

The NPI 1477518454 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.

  • Injection, adenosine, 1 mg (not to be used to report any adenosine phosphate compounds) (HCPCS:J0153)
  • Management using the results of remote vital sign monitoring per calendar month, first 20 minutes (HCPCS:99457)
  • Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days (HCPCS:99454)
  • Established patient office or other outpatient visit, 30-39 minutes (HCPCS:99214)
  • Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (HCPCS:93306)
  • Follow-up hospital inpatient care per day, typically 35 minutes (HCPCS:99233)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (HCPCS:93000)
  • Ultrasound of both sides of head and neck blood flow (HCPCS:93880)
  • Technetium tc-99m tetrofosmin, diagnostic, per study dose (HCPCS:A9502)
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (HCPCS:78452)
  • Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician (HCPCS:93015)
  • Injection of drug or substance into vein (HCPCS:96374)
  • Established patient office or other outpatient visit, 40-54 minutes (HCPCS:99215)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (HCPCS:93010)
  • 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)
  • Electrocardiogram (ecg) 2-day continuous with report (HCPCS:93226)
  • Electrocardiogram (ecg) up to 30 days continuous with transmission of patient triggered events with review and report by health care professional (HCPCS:93229)
  • Follow-up hospital inpatient care per day, typically 25 minutes (HCPCS:99232)
  • New patient office or other outpatient visit, 45-59 minutes (HCPCS:99204)
  • Established patient office or other outpatient visit, 20-29 minutes (HCPCS:99213)
  • Remote monitoring of physiologic parameters, initial set-up and patient education on use of equipment (HCPCS:99453)
  • Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days (HCPCS:93294)
  • Ultrasound of heart blood flow, valves and chambers (HCPCS:93320)
  • Ultrasound of heart with color-depicted blood flow, rate and valve function (HCPCS:93325)
  • Ultrasound of heart with continuous electrocardiogram (ecg) during rest, exercise and/or drug induced stress with review and report (HCPCS:93351)
  • Telephone medical discussion with physician, 11-20 minutes (HCPCS:99442)
  • Critical care, first 30-74 minutes (HCPCS:99291)
  • Ultrasound study of arm and leg arteries (HCPCS:93922)
  • Complete ultrasound study of arm and leg arteries (HCPCS:93923)
  • Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes (HCPCS:99458)
  • New patient office or other outpatient visit, 60-74 minutes (HCPCS:99205)
  • Insertion of tube in coronary artery for diagnosis with review by radiologist (HCPCS:93454)
  • Insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist (HCPCS:93458)
  • Hospital discharge day management, more than 30 minutes (HCPCS:99239)
  • Coronary angioplasty and stenting (HCPCS:NAN05)
  • Pacemaker insertion or repair (HCPCS:NAN10)
  • Leg revascularization (restoring blood flow) (HCPCS:NAN01)

The enumeration date for this NPI number is 4/20/2006 and was last updated on 4/12/2011.

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 DiseaseA75160CALIFORNIAYes

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
1BH182ZMEDICARE PINCALIFORNIA
2A75160OTHERCALIFORNIABLUE SHIELD
3I27260MEDICARE UPIN
4WA75160AMEDICARE PINCALIFORNIA
5P00335335OTHERCALIFORNIARAIL RAOD MEDICARE

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.