James Parker Gregg, MD

Diagnostic radiologist in Houston, Texas · NPI 1518100049

James Gregg is one of 850 diagnostic radiologists practicing in Houston, Texas. James Gregg practices with Eagle Partners PLLC, Singleton Associates PA, and Sonoran Radiology Ltd.

Registry record (NPPES)

NPI: 1518100049
Type: Type 1 · Individual
Primary taxonomy: Radiology, Diagnostic Radiology · 2085R0202X
Address on file: 7026 Old Katy Rd Ste 276
Houston, TX 77024-2187
(713) 621-7436
Enumerated: Apr 14, 2009
Record last updated: Apr 6, 2018
License states listed: TX

Medicare (CMS)

Enrollment: Medicare-enrolled in AZ, CO, TX
Diagnostic Radiology
Revalidation due: No date set by CMS

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Part D prescribing
Procedure volumes by CPT code
Group affiliations and colleagues
Full enrollment history

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Practice locations

11800 Astoria Blvd
Houston, TX 77089
(281) 929-6100
1333 Moursund St
Houston, TX 77030
(800) 447-3422
1431 Studemont St
Houston, TX 77007
(713) 242-2980
1635 N Loop W Memorial Hermann Greater Heights Hospital
Houston, TX 77008
(713) 867-2000
4223 Richmond Ave
Houston, TX 77027
(713) 351-0630
4506 Waring St James Gregg MD
Houston, TX 77027
(832) 915-2534
6720 Bertner Ave
Houston, TX 77030
(855) 504-4544
6720 Bertner Ave Mc2 270
Houston, TX 77030
(281) 466-4401
8010 Ivan Reid Dr
Houston, TX 77040
(405) 923-1296
12801 Hacienda Rdg
Austin, TX 78738
(713) 461-3573
1401 E Trinity Mills Rd Sagecrest Hospital Of Carollton
Carollton, TX 75006
(972) 810-0700
504 Medical Ctr Blvd
Conroe, TX 77304
(713) 461-3573
27800 Northwest Fwy Memorial Hermann Cypress Hospital
Cypress, TX 77433
(346) 231-6850
9440 Poppy Dr
Dallas, TX 75218
(214) 324-6100
8780 Hwy 6 B Mh Conv Care Sienna Plantation
Friendswood, TX 77549
(281) 778-1802
38 Lakeview Dr
Galveston, TX 77551
(281) 870-4592
1110 N Sarah Dewitt Dr Gonzales Health System
Gonzales, TX 78629
(830) 672-7581
22999 Hwy 59 N
Humble, TX 77339
(713) 461-3573
22430 Grand Corner Dr
Katy, TX 77494
(713) 512-6040
23900 Katy Fwy
Katy, TX 77494
(281) 644-7000
100 Medical Dr
Lake Jackson, TX 77566
(713) 461-3573
2555 Gulf Fwy S
League City, TX 77573
(832) 932-9900
1818 N 26th St
Nederland, TX 77627
(409) 550-2736
10905 Memorial Hermann Dr Suite 104
Pearland, TX 77584
(713) 704-1203
11100 Shadow Creek Pkwy
Pearland, TX 77584
(713) 461-3573

Also practices in 4 more cities in Texas.

More diagnostic radiologists in Houston

Updated August 2026. Practice locations and specialty come from the CMS Doctors and Clinicians file, the registry record from NPPES, and enrollment from CMS Medicare enrollment files. NPI records are corrected at the source, through NPPES.