Quick answers
- Does Guillermo R. Otero-Perez accept Medicare assignment?
- Yes. Medicare's clinician data says Guillermo R. Otero-Perez accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Guillermo R. Otero-Perez see?
- In 2024, CMS data shows 41 Original Medicare patients and 161 services for Guillermo R. Otero-Perez. This counts Original Medicare only and measures volume, not quality.
- What is Guillermo R. Otero-Perez's NPI number?
- 1962441725. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Guillermo R. Otero-Perez, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 41 |
|---|---|
| Services billed to Medicare | 161 |
| Different services or procedures | 11 |
| Participating Medicare provider | Yes |
| Average age of these patients | 62 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)41 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)30 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol66%
- Depression59%
- Anxiety59%
- High blood pressure54%
- Arthritis46%
Practice locations
Addresses where Guillermo R. Otero-Perez is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 8; the Medicare profile lists all.
- 1021 Old York Rd, Suite 301Abington, PA 19001 (215) 395‑8266
- 50 E Township Line Rd, Medical Arts Bldg 2nd FloorElkins Park, PA 19027 (215) 663‑6067
- 5501 Old York RdPhila, PA 19141
- 5501 Old York Rd Levy 2, Einstein Pediatrics AssociatesPhiladelphia, PA 19141 (215) 456‑6786
- 5501 Old York Rd Wcb 4th Flr, Einstein Ct Surgery AssocPhiladelphia, PA 19141 (215) 456‑8270
Group practices
Medicare enrollment lists Guillermo R. Otero-Perez as a member of these groups (CMS data updated October 2, 2026).
- Einstein Practice Plan Inc794 clinicians in the group
- CMC of PA, PC9 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in Abington
Clinicians with the same Medicare primary specialty in Abington, PA — not a recommendation.
Other clinicians in Einstein Practice Plan Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Puerto Rico School Of Medicine |
| Graduation year | 2002 (24 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1962441725 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians