Mohammed Al-Khayyat, M.D.
NPI 1588195424 · Internal Medicine Physician · Montclair, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mohammed Al-Khayyat, M.D. is a Internal Medicine Physician provider in Montclair, CA (NPI 1588195424).
Provider details
- NPI number
- 1588195424
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A166446 (CA)
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
9 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
221 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 | 131 | $118 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 49 | $171 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 41 | $115 |
Typical Medicare-allowed amounts for these services range $115–$171 (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 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levofloxacin | 81 | 80 |
| Atorvastatin Calcium | 66 | 64 |
| Furosemide | 60 | 55 |
| Cefdinir | 43 | 43 |
| Pantoprazole Sodium | 37 | 36 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 37 | 37 |
| Amlodipine Besylate | 35 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-03-22
- Last updated
- 2020-07-22
- Certified
- 2020-07-22
Frequently asked questions
- What is Mohammed Al-Khayyat's NPI number?
- Mohammed Al-Khayyat's National Provider Identifier (NPI) is 1588195424, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mohammed Al-Khayyat's specialty?
- Mohammed Al-Khayyat is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mohammed Al-Khayyat located?
- Mohammed Al-Khayyat's practice location on file with NPPES is 9635 Monte Vista Ave Ste 205, Montclair, CA 91763-2235.
- What is Mohammed Al-Khayyat's phone number?
- The practice phone number listed in the NPPES registry for Mohammed Al-Khayyat is (909) 621-0009.
- Does Mohammed Al-Khayyat accept Medicare?
- Mohammed Al-Khayyat is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mohammed Al-Khayyat's NPI active?
- Yes — Mohammed Al-Khayyat's NPI (1588195424) is active in the NPPES registry as of the last update on 2020-07-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.