Ariana Klein, MD
NPI 1619331014 · Internal Medicine Physician · Houston, TX
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ariana Klein, MD is a Internal Medicine Physician provider in Houston, TX (NPI 1619331014).
Provider details
- NPI number
- 1619331014
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
10 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
87 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 33 | $91 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 28 | $129 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 26 | $17 |
Typical Medicare-allowed amounts for these services range $17–$129 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 58 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 147 | 56 |
| Lisinopril | 97 | 33 |
| Losartan Potassium | 66 | 25 |
| Amlodipine Besylate | 65 | 28 |
| Levothyroxine Sodium | 56 | 18 |
| Nifedipinebrand: Nifedipine Er | 52 | 13 |
| Gabapentin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-04-12
- Last updated
- 2020-12-15
- Certified
- 2020-12-15
Frequently asked questions
- What is Ariana Klein's NPI number?
- Ariana Klein's National Provider Identifier (NPI) is 1619331014, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ariana Klein's specialty?
- Ariana Klein is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ariana Klein located?
- Ariana Klein's practice location on file with NPPES is 6431 Fannin St, Houston, TX 77030-1501.
- What is Ariana Klein's phone number?
- The practice phone number listed in the NPPES registry for Ariana Klein is (713) 500-6500.
- Does Ariana Klein accept Medicare?
- Ariana Klein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ariana Klein's NPI active?
- Yes — Ariana Klein's NPI (1619331014) is active in the NPPES registry as of the last update on 2020-12-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.