Active NPI 1306892005 Individual Practitioner Male Practitioner

Dr. Henry Jack Grainger , DO

Internal Medicine • Houston, TX

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Henry Grainger, DO is a certified Internal Medicine practicing in Houston, TX. With approximately 53 years of clinical experience since completing medical education in 1973, Dr. Grainger delivers high-quality medical care to the local community at 511A W TIDWELL RD.

Dr. Grainger is affiliated with 1960 Physician Associates and accepts Medicare assignment.

Frequently performed procedures and clinical services include subsequent nursing facility care with high level of medical decision making, per day, if using time, at least, established patient outpatient office visit, injection, dexamethasone sodium phosphate, 1 mg. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

511a W Tidwell Rd

Houston, TX 770914338

Telephone 7136949709

Fax 2816188761

Associated Practice Facility / Clinic

🏢 Grainger Diagnostic Clinic, Pa Facility NPI 1710934419

Medicare Profile & Education

Medical School

Other

Graduation Year

1973

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Houston, TX

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

53 Yrs +31.8 yrs vs City Avg

City Avg: 21.2 Yrs

State Avg: 26.2 Yrs

Regional Practice Density

1569 Specialists

Practicing in Houston, TX (9538 Statewide)

Telehealth Adoption Rate

20.7% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

62.5% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Grainger (53 Years) 53 Yrs

Houston Specialty Average (21.2 Years) 21.2 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99310 Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes	1,117	52	$203.00	$153.73
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	114	45	$632.46	$129.04
J1100 Injection, dexamethasone sodium phosphate, 1 mg	112	19	$5.00	$0.11
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	52	20	$73.00	$14.31
99306 Initial nursing facility visit, typically 45 minutes per day	41	32	$235.00	$181.65
99213 Established patient office or other outpatient visit, typically 15 minutes	35	26	$452.83	$90.09
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	30	22	$167.00	$107.64
J0696 Injection, ceftriaxone sodium, per 250 mg	30	14	$25.00	$0.45
99316 Nursing facility discharge management, more than 30 minutes	23	21	$192.00	$130.49
G0182 Physician supervision of a patient under a medicare-approved hospice (patient not present) requiring complex and multidisciplinary care modalities involving regular physician development and/or revision of care plans, review of subsequent reports of patien	19	13	$156.00	$104.64
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	16	16	$596.06	$130.07
G0442 Annual alcohol misuse screening, 5 to 15 minutes	14	14	$70.00	$18.76
G0444 Annual depression screening, 5 to 15 minutes	13	13	$70.00	$18.78

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99310 Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes	925	63	$202.97	$155.04
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	87	43	$655.29	$127.04
J1100 Injection, dexamethasone sodium phosphate, 1 mg	76	19	$5.00	$0.12
99306 Initial nursing facility visit, typically 45 minutes per day	57	44	$235.00	$184.12
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	44	29	$167.00	$107.72
99316 Nursing facility discharge management, more than 30 minutes	36	29	$192.00	$132.92
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	35	23	$73.00	$14.34
G0442 Annual alcohol misuse screening, 5 to 15 minutes	24	24	$40.84	$10.88
G0444 Annual depression screening, 5 to 15 minutes	22	22	$44.55	$11.87
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	21	21	$661.86	$130.57
99213 Established patient office or other outpatient visit, typically 15 minutes	20	14	$474.00	$92.17
G0182 Physician supervision of a patient under a medicare-approved hospice (patient not present) requiring complex and multidisciplinary care modalities involving regular physician development and/or revision of care plans, review of subsequent reports of patien	15	13	$156.00	$105.94

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99310 Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes	610	61	$203.00	$135.45
J1100 Injection, dexamethasone sodium phosphate, 1 mg	112	24	$5.00	$0.12
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	92	31	$167.00	$92.52
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	73	42	$486.67	$131.30
99213 Established patient office or other outpatient visit, typically 15 minutes	67	38	$377.34	$92.70
99306 Initial nursing facility visit, typically 45 minutes per day	64	45	$235.00	$167.04
99316 Nursing facility discharge management, more than 30 minutes	49	37	$192.00	$105.04
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	43	24	$58.16	$14.78
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	23	23	$520.65	$133.90
G0442 Annual alcohol misuse screening, 5 to 15 minutes	23	23	$57.83	$15.95
G0444 Annual depression screening, 5 to 15 minutes	16	16	$52.50	$14.21

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	271	42	$166.76	$93.42
99310 Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes	239	48	$203.00	$138.52
99306 Initial nursing facility visit, typically 45 minutes per day	39	31	$234.54	$170.69
99316 Nursing facility discharge management, more than 30 minutes	21	19	$192.00	$107.69
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	13	11	$165.00	$70.81

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	419	44	$159.45	$94.23
99310 Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes	164	39	$200.92	$138.95
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	31	19	$160.71	$71.63
99318 Nursing facility annual assessment, typically 30 minutes	21	21	$159.81	$99.34
99306 Initial nursing facility visit, typically 45 minutes per day	17	17	$228.53	$172.85
99316 Nursing facility discharge management, more than 30 minutes	16	16	$186.50	$109.01

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	356	59	$149.00	$92.79
99310 Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes	182	51	$191.76	$137.48
99318 Nursing facility annual assessment, typically 30 minutes	18	18	$147.00	$97.08
99306 Initial nursing facility visit, typically 45 minutes per day	17	17	$225.00	$169.19
99316 Nursing facility discharge management, more than 30 minutes	14	14	$158.00	$107.14

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	378	174	$150.00	$50.68
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	328	50	$149.00	$91.20
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	142	91	$200.00	$77.55
99310 Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes	135	44	$192.00	$135.68
G0179 Physician re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians to affirm the initial imp	51	24	$125.00	$41.18
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	45	45	$250.00	$114.81
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	26	26	$100.00	$25.11
99318 Nursing facility annual assessment, typically 30 minutes	26	26	$147.00	$95.74
G0181 Physician or allowed practitioner supervision of a patient receiving medicare-covered services provided by a participating home health agency (patient not present) requiring complex and multidisciplinary care modalities involving regular physician or allow	19	13	$200.00	$106.81
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	17	17	$50.00	$9.09
99316 Nursing facility discharge management, more than 30 minutes	13	13	$158.00	$105.71
93000 Routine ekg using at least 12 leads including interpretation and report	11	11	$75.00	$16.72

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	1,107	298	$150.00	$51.65
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	379	55	$149.00	$92.45
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	134	134	$250.00	$75.11
99310 Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes	89	44	$192.00	$137.45
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	23	23	$200.00	$79.53
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	19	19	$100.00	$25.75
99306 Initial nursing facility visit, typically 45 minutes per day	15	15	$225.00	$168.97
99318 Nursing facility annual assessment, typically 30 minutes	14	14	$147.00	$97.44
G0179 Physician re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians to affirm the initial imp	12	12	$125.00	$41.80
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	12	12	$300.00	$171.11

Medical Specialties & State Licenses

CMS Verified: 2021-04-12

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License TX E1595

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Internal Medicine - Cardiovascular Disease

NUCC Taxonomy Code: 207RC0000X

State License TX E1595

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.

Internal Medicine - Geriatric Medicine

NUCC Taxonomy Code: 207RG0300X

State License TX E1595

An internist who has special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the patient's home, the office, long-term care settings such as nursing homes and the hospital.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

115814904 (TX)

Commercial Insurance / Payer ID Blue Cross Blue Shield

00R283 (TX)

Hospital & Practice Group Affiliations

1960 Physician Associates

5039 Fm 2920 Rd, Spring, TX 773883114

Phone: 2815863888

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

4 Associated Practitioners

Mary Thoppil , ANP

Nurse Practitioner - Adult Health

NPI 1477840114

Adult Nurse Practitioner

Nazeneem Kleiman

Nurse Practitioner - Family

NPI 1497396899

David Kallel , RPA

Radiology Practitioner Assistant

NPI 1881846178

Dr. Jorge Guerrero , MD

General Practice

NPI 1912015975

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

6 Historical Events

✅

NPI Profile Active November 13, 2007

NPI status registered as active in NPPES database

📍

Updated Practice Location November 13, 2007

Registered at 511A W TIDWELL RD, HOUSTON, TX 770914338 (Tel: 7136949709)

📍

Updated Business Mailing Address November 13, 2007

Registered at 511A W TIDWELL RD, HOUSTON, TX 770914338 (Tel: 7136949709)

👤

Provider Name / Credentials Updated November 13, 2007

Recorded as HENRY GRAINGER, DO

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) November 13, 2007

Internal Medicine (License #E1595 in TX)

🟢

Initial NPI Registration & Enumeration May 25, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1306892005

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: May 25, 2006

Last Update: April 12, 2021

Sole Proprietor: Yes

Update or Correct Profile

Mailing Address

511a W Tidwell Rd

Houston, TX 770914338

Phone: 7136949709

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.