Amy Calderon, DO, PHARMD
NPI 1821310004 · Gastroenterology Physician · Warren, OH
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Amy Calderon, DO, PHARMD is a Gastroenterology Physician provider in Warren, OH (NPI 1821310004).
Provider details
- NPI number
- 1821310004
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO, PHARMD
- Sex
- Female
- Sole proprietor
- No
- License
- 34.012732 (OH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Pharmacy Service Providers
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
16 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
299 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 | 77 | $120 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 60 | $124 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 46 | $98 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 36 | $230 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 35 | $96 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 290 | 87 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 177 | 165 |
| Pantoprazole Sodium | 94 | 39 |
| Esomeprazole Magnesium | 52 | 12 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 45 | 43 |
| Ursodiol | 43 | — |
| Famotidine | 34 | 16 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,083 across 55 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
- 2010-02-16
- Last updated
- 2025-12-16
- Certified
- 2025-12-16
Frequently asked questions
- What is Amy Calderon's NPI number?
- Amy Calderon's National Provider Identifier (NPI) is 1821310004, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Amy Calderon's specialty?
- Amy Calderon is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Amy Calderon located?
- Amy Calderon's practice location on file with NPPES is 8740 E Market St Ste 2, Warren, OH 44484-2324.
- What is Amy Calderon's phone number?
- The practice phone number listed in the NPPES registry for Amy Calderon is (234) 287-6590.
- Does Amy Calderon accept Medicare?
- Amy Calderon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Amy Calderon's NPI active?
- Yes — Amy Calderon's NPI (1821310004) is active in the NPPES registry as of the last update on 2025-12-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.