DR. HENRY JACK GRAINGER (DO) – Internal Medicine Physician, NPI 1306892005
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
13,290 INTERNAL MEDICINE in TX
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Provider Addresses for DR. HENRY JACK GRAINGER (DO)
511, West Tidwell Road, Independence Heights, Houston, Harris County, Texas, 77091, United States
HOUSTON, TX 770914338
Phone: (713) 694-9709
Fax: (281) 618-8761
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 15 Open Payments records for all available years, with a total value of $321.
Total Amount is formed as General ($321) + Research ($0) + Ownership ($0) = $321.
Last reported payment date: 2024-09-23 • Largest payer in this snapshot: Otsuka America Pharmaceutical, Inc. ($83).
Total Amount
$321
General + Research + Ownership
Payments
15
Total payment records
General Amount
$321
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-09-23
Latest reported date
Top Companies
Largest payers in this snapshot
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2004-02-24
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20040224000823 | I | Internal Medicine | TX | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | 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 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 87 | 43 | $0 |
| J1100 | Injection, dexamethasone sodium phosphate, 1 mg | 76 | 19 | $0 |
| 99306 | Initial nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes | 57 | 44 | $0 |
| 99309 | Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes | 44 | 29 | $0 |
Insurance plans in this area (ZIP 77091)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Family Practice | TX | |
| Family Practice | TX | |
| Internal Medicine, Nephrology | TX | |
| Family Practice, Geriatric Medicine | TX | |
| Pain Management | TX | |
| Physical Therapist In Private Practice | TX | |
| Nurse Practitioner | TX | |
| - | TX | |
| Gastroenterology, Internal Medicine | TX | |
| P O D I A T R Y | TX |
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