Robert Mecum, M.D.
NPI 1114945680 · Gastroenterology Physician · Whittier, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Mecum, M.D. is a Gastroenterology Physician provider in Whittier, CA (NPI 1114945680).
Provider details
- NPI number
- 1114945680
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G78258 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
364 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 108 | $138 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 61 | $98 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 55 | $179 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 42 | $120 |
| Diagnostic Exam of Large Bowel Using a Flexible Endoscope45378 | 29 | $190 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 261 | 114 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 160 | 159 |
| Peg3350/Sod Sul/Nacl/Kcl/Asb/Cbrand: Plenvu | 58 | 58 |
| Sod Picosulf/Mag Ox/Citric Acbrand: Clenpiq | 26 | 26 |
| Metronidazole | 22 | 21 |
| Mesalamine | 22 | — |
| Vonoprazan Fumaratebrand: Voquezna | 21 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,817 across 52 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-17
- Last updated
- 2016-08-09
Frequently asked questions
- What is Robert Mecum's NPI number?
- Robert Mecum's National Provider Identifier (NPI) is 1114945680, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Mecum's specialty?
- Robert Mecum is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Mecum located?
- Robert Mecum's practice location on file with NPPES is 12291 Washington Blvd Ste 304, Whittier, CA 90606-2551.
- What is Robert Mecum's phone number?
- The practice phone number listed in the NPPES registry for Robert Mecum is (562) 789-5577.
- Does Robert Mecum accept Medicare?
- Robert Mecum is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Mecum's NPI active?
- Yes — Robert Mecum's NPI (1114945680) is active in the NPPES registry as of the last update on 2016-08-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.