Atefeh Kalantary, MD
NPI 1558854737 · Internal Medicine Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Atefeh Kalantary, MD is a Internal Medicine Physician provider in Los Angeles, CA (NPI 1558854737).
Provider details
- NPI number
- 1558854737
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 4351040036 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
8 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,057 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 | 666 | $120 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 171 | $175 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 140 | $118 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 40 | $138 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 15 | $119 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Azithromycin | 15 | 14 |
| Metoprolol Succinate | 11 | — |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 11 | — |
| Pantoprazole Sodium | 11 | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (2)
- G3230 Beecher Rd Ste 2Flint, MI 48532Phone: (810) 342-5800Fax: (810) 342-5810
- 1675 Leahy St Ste 201aMuskegon, MI 49442-5542Phone: (231) 672-7800Fax: (231) 672-7801
Registry dates
- Enumerated
- 2018-06-12
- Last updated
- 2023-12-06
- Certified
- 2023-12-06
Frequently asked questions
- What is Atefeh Kalantary's NPI number?
- Atefeh Kalantary's National Provider Identifier (NPI) is 1558854737, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Atefeh Kalantary's specialty?
- Atefeh Kalantary is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Atefeh Kalantary located?
- Atefeh Kalantary's practice location on file with NPPES is 757 Westwood Plz Ste 7501, Los Angeles, CA 90095-8358.
- What is Atefeh Kalantary's phone number?
- The practice phone number listed in the NPPES registry for Atefeh Kalantary is (310) 267-9643.
- Does Atefeh Kalantary accept Medicare?
- Atefeh Kalantary is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Atefeh Kalantary's NPI active?
- Yes — Atefeh Kalantary's NPI (1558854737) is active in the NPPES registry as of the last update on 2023-12-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.