Mamdooh Gayid, MD
NPI 1477554988 · Internal Medicine Physician · Redlands, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mamdooh Gayid, MD is a Internal Medicine Physician provider in Redlands, CA (NPI 1477554988).
Provider details
- NPI number
- 1477554988
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 200500328 (NC)
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
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
112 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 78 | $130 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 19 | $90 |
| Assessment of Emotional Or Behavioral Problems96127 | 15 | $5 |
Typical Medicare-allowed amounts for these services range $5–$130 (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 · 68 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 280 | 76 |
| Losartan Potassium | 242 | 74 |
| Rosuvastatin Calcium | 201 | 66 |
| Amlodipine Besylate | 189 | 55 |
| Metformin Hcl | 140 | 40 |
| Levothyroxine Sodium | 115 | 33 |
| Gabapentin |
Practice location
Mailing address
Additional practice locations (1)
- 2 W Fern AveRedlands, CA 92373-5916Phone: (909) 793-3311
Registry dates
- Enumerated
- 2005-08-09
- Last updated
- 2025-12-15
- Certified
- 2025-12-15
Frequently asked questions
- What is Mamdooh Gayid's NPI number?
- Mamdooh Gayid's National Provider Identifier (NPI) is 1477554988, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mamdooh Gayid's specialty?
- Mamdooh Gayid is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mamdooh Gayid located?
- Mamdooh Gayid's practice location on file with NPPES is 242 Cajon St, Redlands, CA 92373-5202.
- What is Mamdooh Gayid's phone number?
- The practice phone number listed in the NPPES registry for Mamdooh Gayid is (909) 793-3311.
- Does Mamdooh Gayid accept Medicare?
- Mamdooh Gayid is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mamdooh Gayid's NPI active?
- Yes — Mamdooh Gayid's NPI (1477554988) is active in the NPPES registry as of the last update on 2025-12-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.