Physician Profile
Unclaimed ProfileAbout GRAINGER
Henry Jack Grainger, DO practises internal medicine in Houston, TX. Henry is also listed as specialising in cardiovascular disease and geriatric medicine.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What does Dr. Grainger specialise in?
Dr. Grainger is an internal medicine in Houston, TX. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
Where is Dr. Grainger located?
Dr. Grainger is listed at 511A W TIDWELL RD, Houston, TX 77091. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Grainger's phone number?
The number on file is (713) 694-9709. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Grainger?
Dr. Grainger's National Provider Identifier is 1306892005. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Grainger go to medical school?
Dr. Grainger attended Other, graduating in 1973. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Grainger have?
Dr. Grainger has 53 years experience. Calculated from a graduation year of 1973, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Grainger do most often?
According to Medicare billing data, Dr. Grainger provides treatments such as injection of drug or substance under skin or into muscle, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Grainger's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Grainger. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (713) 694-9709
- Email not available
Practice Locations
511A W TIDWELL RD
Houston, TX 77091
Procedures Most Often Billed to Medicare
1,616 services · 307 patients · 13 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
52 |
| Injection, dexamethasone sodium phosphate, 1 mg | Drug given | J1100 |
112 |
| Injection, ceftriaxone sodium, per 250 mg | Drug given | J0696 |
30 |
| Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes | Office visit | 99310 |
1,117 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
114 |
| Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more | Office visit | 99306 |
41 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
35 |
| Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes | Office visit | 99309 |
30 |
| Nursing facility discharge management, more than 30 minutes | Office visit | 99316 |
23 |
| 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 patie | Billing code | G0182 |
19 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 3
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other internal medicines in Houston 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1973 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Injection of drug or substance under skin or into muscle 8
Providers in TX who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.