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DR. ROTIMI MAFOLASERE WILLIAMS
NPI 1518673953
Nurse Practitioner - Psychiatric/Mental Health in Reading, PA

Active since January 30, 2023PECOS EnrolledAccepts Medicare Assignment
140 OBERLIN AVE, READING, PA 19608(484) 317-2028(610) 421-4412 Get Directions Write a Review

NPPES record last updated: November 13, 2025. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Nov 13, 2025, Feb 3, 2025, Jan 30, 2023 (3 updates tracked since 2023).

About Dr. Rotimi Mafolasere Williams NPPES

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

DR. ROTIMI MAFOLASERE WILLIAMS (NPI 1518673953) is an individual psychiatric/mental health provider in Reading, Pennsylvania, licensed in Pennsylvania (SP026893) and active in the NPI registry since January 2023. He is enrolled in Medicare PECOS and is a graduate of Other (2022).

NPPES Registry Identity

NPI1518673953
Entity TypeIndividualMale
Primary Taxonomy363LP0808X
Provider Legal NameDR. ROTIMI MAFOLASERE WILLIAMS
Location Address140 OBERLIN AVEReading, PA 19608-1260
Mailing Address140 Oberlin AveReading, PA 19608-1260
Phone(484) 317-2028
Fax(610) 421-4412
Sole ProprietorYes
Medical School CMSOtherGraduated 2022
Enumeration DateJanuary 30, 2023
Last NPPES UpdateNovember 13, 20253 updates tracked since enumeration
NPPES CertifiedNovember 13, 2025
✔ NPI 1518673953 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
License✔ Licensed in PA · SP026893
140 OBERLIN AVE, Reading, PA 19608
Open in Google Maps ↗

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

Dr. Rotimi Mafolasere Williams 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 ID4789049545
PECOS Enrollment IDI20230501000046
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

5

Medicare enrollment records show Rotimi Williams reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Dominion Mental Health
Same address
Mental Health (Including Community Mental Health Center)
140 OBERLIN AVE
Sinking Spring, PA 19608
  • Reassigned Medicare billing, Pennsylvania enrollment
NPI 1417807371 (484) 317-2028
Haven Behavioral Services Of Reading, LLC
4.8 mi
Psychiatric Hospital
145 N 6TH ST
Reading, PA 19601
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 48 clinicians in this Medicare group
NPI 1629384292 (610) 406-4340
Prospect Health Access Network, Inc.
40 mi
Physical Medicine & Rehabilitation
485 BALTIMORE PIKE, SUITE 202
Glen Mills, PA 19342
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 654 clinicians in this Medicare group
NPI 1083061006 (610) 588-9222
Supportive Care Of Pennsylvania LLC
116 mi
Clinical
20 ROBERT PITT DR, UNIT 209
Monsey, NY 10952
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 160 clinicians in this Medicare group
NPI 1174992275 (845) 826-0060
Sondermind, P.A.
1,159 mi
Clinical
801 E DOUGLAS AVE FL 2
Wichita, KS 67202
  • Reassigned Medicare billing, Pennsylvania enrollment
  • Medicare enrollment name: Sondermind PA
  • 70 clinicians in this Medicare group
NPI 1710647581 (844) 843-7279

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 5

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.

Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309
A follow-up nursing facility visit per day is a daily check-in by a healthcare professional. This 25-minute visit typically involves monitoring your health progress, addressing any concerns, and adjusting treatment plans as necessary. It's a vital part of ensuring your ongoing wellbeing.
363 services45 patients
Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes 99350
An established patient home visit is a service where a healthcare professional visits a patient's home for a check-up or treatment. The visit typically lasts for about an hour. This service is especially beneficial for patients who may have difficulty traveling to a healthcare facility.
228 services28 patients
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more 99308
A follow-up nursing facility visit per day is a daily check-up service provided by healthcare professionals. It lasts around 15 minutes and involves assessing your health status, monitoring your recovery progress, and addressing any concerns you may have about your health or treatment.
35 services23 patients
Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more 99306
An initial nursing facility visit is your first meeting with your healthcare team at a nursing facility. Lasting typically 45 minutes, this appointment involves a comprehensive health assessment and the creation of your personalized care plan. It's a crucial step to ensure your health and well-being.
34 services34 patients
Residence visit for new patient with high level of medical decision making, per day, if using time, at least 75 minutes 99345
A new patient home visit is a comprehensive 75-minute appointment conducted at your home. The healthcare professional will assess your health, discuss any concerns, and create a personalized care plan. It's convenient, comfortable, and tailored to your specific needs.
19 services19 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 19608 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
$84.88 typical visit price
range $54.64 – $166.87
Typical copayment $21.22 (range $13.66 – $41.71)
Most-billed visit code 99203
Established Patient
$96.82 typical visit price
range $17.33 – $135.84
Typical copayment $24.20 (range $4.33 – $33.96)
Most-billed visit code 99214
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

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

DOMINION MENTAL HEALTH
Clinic/Center (Mental Health (Including Community Mental Health Center))
140 OBERLIN AVE
SINKING SPRING, PA 19608
Berks County (484) 317-2028

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 Rotimi Williams's NPI number?

The NPI number for Rotimi Williams is 1518673953. It was assigned to this individual provider in the NPPES registry on January 30, 2023.

Where is Rotimi Williams located?

Rotimi Williams practices at 140 Oberlin Ave, Reading, PA 19608. The listed phone number is (484) 317-2028.

What is Rotimi Williams's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Is Rotimi Williams enrolled in Medicare?

Yes. Rotimi Williams 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 Rotimi Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Rotimi Williams reassigns Medicare benefits to 5 organizations: Dominion Mental Health (Sinking Spring, PA), Haven Behavioral Services Of Reading, LLC (Reading, PA), Prospect Health Access Network, Inc. (Glen Mills, PA), Supportive Care Of Pennsylvania LLC (Monsey, NY) and Sondermind, P.A. (Wichita, KS). 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 Rotimi Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Rotimi Williams was last updated on November 13, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.