GREGORY J GUZLEY MD NPI 1427020114

NPI Information

  • NPI: 1427020114
  • Provider Name: GREGORY J GUZLEY, MD
  • Classification: Internal Medicine - 207RH0003X
  • Specialization: Hematology & Oncology
  • Entity Type: Individual
  • PECOS Registration: Yes
  • Address: 4411 MEDICAL DR
    SAN ANTONIO, TX
    ZIP 78229
  • Phone: (210) 595-5300

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NPI Details

Gregory J Guzley, MD is a hematology and oncology internal medicine in San Antonio, TX. The provider is an internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered. Gregory J Guzley, MD NPI is 1427020114. 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:

4411 MEDICAL DR
SAN ANTONIO, TX
ZIP 78229-822
Phone: (210) 595-5300
Fax: (210) 614-8740

The NPI 1427020114 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, ferumoxytol, for treatment of iron deficiency anemia, 1 mg (non-esrd use) (HCPCS:Q0138)
  • Injection, iron sucrose, 1 mg (HCPCS:J1756)
  • Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml (HCPCS:Q9967)
  • Injection, fosaprepitant, 1 mg (HCPCS:J1453)
  • Injection, immune globulin, (octagam), intravenous, non-lyophilized (e.g., liquid), 500 mg (HCPCS:J1568)
  • Insertion of needle into vein for collection of blood sample (HCPCS:36415)
  • Blood test, comprehensive group of blood chemicals (HCPCS:80053)
  • Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (HCPCS:85025)
  • Injection, dexamethasone sodium phosphate, 1 mg (HCPCS:J1100)
  • Gammaglobulin (immune system protein) measurement (HCPCS:82784)
  • Injection, palonosetron hcl, 25 mcg (HCPCS:J2469)
  • Injection, granisetron hydrochloride, 100 mcg (HCPCS:J1626)
  • Ferritin (blood protein) level (HCPCS:82728)
  • Iron level (HCPCS:83540)
  • Iron binding capacity (HCPCS:83550)
  • Established patient office or other outpatient visit, 30-39 minutes (HCPCS:99214)
  • Established patient office or other outpatient visit, 20-29 minutes (HCPCS:99213)
  • Infusion into a vein for therapy, prevention, or diagnosis, additional sequential infusion, 1 hour or less (HCPCS:96367)
  • Measurement of immunoglobulin light chains (HCPCS:83521)
  • Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less (HCPCS:96365)
  • Administration of chemotherapy into vein, 1 hour or less (HCPCS:96413)
  • Infusion into a vein for therapy, prevention, or diagnosis, each additional hour (HCPCS:96366)
  • Injection of additional new drug or substance into vein (HCPCS:96375)
  • Injection, zoledronic acid, 1 mg (HCPCS:J3489)
  • Injection, diphenhydramine hcl, up to 50 mg (HCPCS:J1200)
  • Injection of drug or substance under skin or into muscle (HCPCS:96372)
  • Injection, hydrocortisone sodium succinate, up to 100 mg (HCPCS:J1720)
  • Reticulated (young) platelet measurement (HCPCS:85055)
  • Administration of chemotherapy into vein, each additional hour (HCPCS:96415)
  • Ct scan of chest with contrast (HCPCS:71260)
  • Blood test, clotting time (HCPCS:85610)
  • Administration of additional new drug or substance into vein, 1 hour or less (HCPCS:96417)
  • Complete blood cell count (red cells, white blood cell, platelets), automated test (HCPCS:85027)
  • Ct scan of abdomen and pelvis with contrast (HCPCS:74177)
  • Microscopic examination for white blood cells with manual cell count (HCPCS:85007)
  • Follow-up hospital inpatient care per day, typically 15 minutes (HCPCS:99231)
  • Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle (HCPCS:96401)
  • Lactate dehydrogenase (enzyme) level (HCPCS:83615)
  • Established patient office or other outpatient visit, 40-54 minutes (HCPCS:99215)
  • Ct scan of chest without contrast (HCPCS:71250)
  • Folic acid level, serum (HCPCS:82746)
  • Protein measurement, serum (HCPCS:84165)
  • Immunologic analysis technique on serum (immunofixation) (HCPCS:86334)
  • Cyanocobalamin (vitamin b-12) level (HCPCS:82607)
  • Irrigation of implanted venous access drug delivery device (HCPCS:96523)
  • Administration of additional new drug or substance into vein using push technique (HCPCS:96411)
  • New patient office or other outpatient visit, 45-59 minutes (HCPCS:99204)
  • Drawing of blood for a medical problem (HCPCS:99195)
  • Ct scan of abdomen and pelvis without contrast (HCPCS:74176)
  • Infusion into a vein for therapy, prevention, or diagnosis concurrent with another infusion (HCPCS:96368)
  • New patient office or other outpatient visit, 60-74 minutes (HCPCS:99205)

The enumeration date for this NPI number is 2/6/2006 and was last updated on 1/28/2016.

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
1207RH0003XInternal MedicineHematology & OncologyF1613TEXASYes

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
1116715701MEDICAIDTEXAS
2116715704MEDICAIDTEXAS
3B23219MEDICARE UPINTEXAS
483Z208MEDICARE PINTEXAS
5437919YKYCMEDICARE PINTEXAS
6830005492MEDICARE PINTEXAS
783Z208OTHERTEXASBCBS
8P01547632OTHERTEXASRAILROAD MEDICARE
9116715705MEDICAIDTEXAS

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

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