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GUILLERMO ROBERTO OTERO-PEREZ MD
NPI 1962441725
Psychiatry & Neurology - Psychiatry in Philadelphia, PA

Active since June 06, 2006PECOS EnrolledAccepts Medicare Assignment
101 E OLNEY AVE, SUITE 400, PHILADELPHIA, PA 19120(215) 456-7000(215) 254-2599 Get Directions Write a Review

NPPES record last updated: January 15, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jan 31, 2023, Dec 16, 2020 (2 updates tracked since 2020).

About Guillermo Roberto Otero-perez Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GUILLERMO ROBERTO OTERO-PEREZ MD (NPI 1962441725) is an individual psychiatry provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (MD428748) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of University Of Puerto Rico School Of Medicine (2002).

NPPES Registry Identity

NPI1962441725
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameGUILLERMO ROBERTO OTERO-PEREZCredential: MD
Location Address101 E OLNEY AVE, SUITE 400Philadelphia, PA 19120-2421
Mailing Address5501 Old York RdPhiladelphia, PA 19141-3018 · (215) 456-8103 · Fax (215) 456-7855
Phone(215) 456-7000
Fax(215) 254-2599
Sole ProprietorNo
Medical School CMSUniversity Of Puerto Rico School Of MedicineGraduated 2002
Enumeration DateJune 6, 2006
Last NPPES UpdateJanuary 15, 20252 updates tracked since enumeration
NPPES CertifiedJanuary 15, 2025
✔ NPI 1962441725 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
Licenses✔ Licensed in PA · MD428748✔ Licensed in PA · MT180138
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
101 E OLNEY AVE, Philadelphia, PA 19120
Open in Google Maps ↗

Secondary Practice Locations 2

Location 1795 E Lancaster Ave Ste 210Villanova, PA 19085-1525 · Phone (215) 254-6000 · Fax (215) 754-1705
Location 2721 Dresher Rd Ste 1100Horsham, PA 19044-2216 · Phone (215) 254-6000 · Fax (215) 754-1705

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter Health, Ambetter Health of Delaware.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Guillermo Roberto Otero-perez Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7911903976
PECOS Enrollment IDI20061013000472
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Guillermo Otero-perez reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Einstein Practice Plan, Inc
0.1 mi
Obstetrics & Gynecology
101 E OLNEY AVE, SUITE 400
Philadelphia, PA 19120
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 1,205 clinicians in this Medicare group
NPI 1154355220 (215) 456-7000
Cmc Of PA PC
9.1 mi
Psychiatry
721 DRESHER RD STE 1100
Horsham, PA 19044
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 37 clinicians in this Medicare group
NPI 1083341341 (215) 254-6000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
41 services15 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
30 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 19120 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$180.99 typical visit price
range $59.88 – $180.99
Typical copayment $45.24 (range $14.97 – $45.24)
Most-billed visit code 99205
Established Patient
$74.47 typical visit price
range $19.30 – $147.29
Typical copayment $18.61 (range $4.82 – $36.82)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

VERONICA MOONEY CRNA
Nurse Anesthetist, Certified Registered
101 E OLNEY AVE, SUITE 400
PHILADELPHIA, PA 19120
Philadelphia County (215) 456-7000
LAUREN BRUCE CRNA
Nurse Anesthetist, Certified Registered
101 E OLNEY AVE, SUITE 400
PHILADELPHIA, PA 19120
Philadelphia County (215) 456-7000
GLENN SHOPPER MD
Anesthesiology
101 E OLNEY AVE, SUITE 400
PHILADELPHIA, PA 19120
Philadelphia County (215) 456-7000
JOHN WHYTE MD
Physical Medicine & Rehabilitation
101 E OLNEY AVE, SUITE 400
PHILADELPHIA, PA 19120
Philadelphia County (215) 456-7000
MARCO A GIDARO MD
Nurse Anesthetist, Certified Registered
101 E OLNEY AVE, SUITE 400
PHILADELPHIA, PA 19120
Philadelphia County (215) 456-7000
MS. LINDA BAILEY P.A.
Physician Assistant (Surgical)
101 E OLNEY AVE, SUITE 400
PHILADELPHIA, PA 19120
Philadelphia County (215) 456-7000
LUXOTTICA OF AMERICA INC
Eyewear Supplier
101 E OLNEY AVE
PHILADELPHIA, PA 19120
Philadelphia County (305) 557-9004
EINSTEIN COMMUNITY HEALTH ASSOCIATES, INC
Family Medicine
101 E OLNEY AVE
PHILADELPHIA, PA 19120
Philadelphia County (215) 456-4694

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Guillermo Otero-perez's NPI number?

The NPI number for Guillermo Otero-perez is 1962441725. It was assigned to this individual provider in the NPPES registry on June 6, 2006.

Where is Guillermo Otero-perez located?

Guillermo Otero-perez practices at 101 E Olney Ave Suite 400, Philadelphia, PA 19120. The listed phone number is (215) 456-7000.

What is Guillermo Otero-perez's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Guillermo Otero-perez enrolled in Medicare?

Yes. Guillermo Otero-perez is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Guillermo Otero-perez's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Guillermo Otero-perez reassigns Medicare benefits to 2 organizations: Einstein Practice Plan, Inc (Philadelphia, PA) and Cmc Of PA PC (Horsham, PA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Guillermo Otero-perez's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Guillermo Otero-perez accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Buckeye Health Plan list Guillermo Otero-perez as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Guillermo Otero-perez was last updated on January 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.