Justin Knowles, NP-C
NPI 1649662156 · Family Nurse Practitioner · Houston, TX
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Justin Knowles, NP-C is a Family Nurse Practitioner provider in Houston, TX (NPI 1649662156).
Provider details
- NPI number
- 1649662156
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP-C
- Sex
- Male
- Sole proprietor
- No
- License
- AP127510 (TX)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
11 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
300 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 220 | $99 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 56 | $96 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 12 | $147 |
| Advance Care Planning, First 30 Minutes99497 | 12 | $64 |
Typical Medicare-allowed amounts for these services range $64–$147 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-02-21
- Last updated
- 2021-06-24
- Certified
- 2021-06-24
Frequently asked questions
- What is Justin Knowles's NPI number?
- Justin Knowles's National Provider Identifier (NPI) is 1649662156, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Justin Knowles's specialty?
- Justin Knowles is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Justin Knowles located?
- Justin Knowles's practice location on file with NPPES is 1515 Holcombe Blvd, Houston, TX 77030-4009.
- What is Justin Knowles's phone number?
- The practice phone number listed in the NPPES registry for Justin Knowles is (713) 792-6161.
- Does Justin Knowles accept Medicare?
- Justin Knowles is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Justin Knowles's NPI active?
- Yes — Justin Knowles's NPI (1649662156) is active in the NPPES registry as of the last update on 2021-06-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.