Grant Chen, M.D.
NPI 1548555469 · Pain Medicine (Anesthesiology) Physician · Houston, TX
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Grant Chen, M.D. is a Pain Medicine (Anesthesiology) Physician provider in Houston, TX (NPI 1548555469).
Provider details
- NPI number
- 1548555469
- Entity type
- Individual
- Primary specialty
- Pain Medicine (Anesthesiology) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 25MA10180200 (NJ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
15 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
526 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 145 | $128 |
| Chronic Pain Management and Treatment, Monthly Bundle Including, Diagnosis; Assessment and Monitoring; Administration of a Validated Pain Rating Scale Or Tool; the Development, Implementation, Revision, And/Or Maintenance of a Person-Centered Care Plan ThaG3002 | 98 | $82 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 85 | $165 |
| Injection of Substance Into Lower Spine Canal Using Imaging Guidance62323 | 54 | $256 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 27 | $91 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 107 | 42 |
| Meloxicam | 45 | 28 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 42 | 24 |
| Pregabalin | 39 | 18 |
| Tramadol Hcl | 29 | 17 |
| Duloxetine Hcl | 27 | 13 |
| Tizanidine Hcl | 22 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$43,735 across 69 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-06-20
- Last updated
- 2021-08-31
- Certified
- 2021-07-06
Frequently asked questions
- What is Grant Chen's NPI number?
- Grant Chen's National Provider Identifier (NPI) is 1548555469, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Grant Chen's specialty?
- Grant Chen is listed in the NPPES registry with a primary specialty of Pain Medicine (Anesthesiology) Physician (Allopathic & Osteopathic Physicians).
- Where is Grant Chen located?
- Grant Chen's practice location on file with NPPES is 6431 Fannin St., Houston, TX 77030.
- What is Grant Chen's phone number?
- The practice phone number listed in the NPPES registry for Grant Chen is (713) 500-6200.
- Does Grant Chen accept Medicare?
- Grant Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Grant Chen's NPI active?
- Yes — Grant Chen's NPI (1548555469) is active in the NPPES registry as of the last update on 2021-08-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.