1. Home
  2. Directory
  3. California
  4. Emeryville
  5. Emergency Medicine
  6. NPI Profile

DR. THOMAS RYAN WALLIN M.D.
NPI 1881872034
Emergency Medicine in Emeryville, CA

Active since February 08, 2008PECOS Enrolled
94.62/100
CMS Quality Rating
2100 POWELL STREET, CALIFORNIA EMERGENCY PHYSICIANS CREDENTIALING DEPT, EMERYVILLE, CA 94608(888) 267-3880 Get Directions Write a Review

NPPES record last updated: March 6, 2013. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Thomas Ryan Wallin M.d. NPPES

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

DR. THOMAS RYAN WALLIN M.D. (NPI 1881872034) is an individual emergency medicine provider in Emeryville, California, licensed in California (A94866) and active in the NPI registry since February 2008. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1881872034
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameDR. THOMAS RYAN WALLINCredential: M.D.
Location Address2100 POWELL STREET, CALIFORNIA EMERGENCY PHYSICIANS CREDENTIALING DEPTEmeryville, CA 94608
Mailing Address2100 Powell Street, California Emergency Physicians Credentialing DeptEmeryville, CA 94608 · (888) 267-3880
Phone(888) 267-3880
Sole ProprietorNo
Enumeration DateFebruary 8, 2008
Last NPPES UpdateMarch 6, 2013
✔ NPI 1881872034 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in CA · A94866
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
2100 POWELL STREET, Emeryville, CA 94608
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 (PECOS)

Dr. Thomas Ryan Wallin M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Reassignment

Medicare enrollment records show Thomas Wallin reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

California Emergency Physc Med Grp
1.3 mi
Emergency Medicine
5151 F ST
Sacramento, CA 95819
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: Cep America - California
  • 2,323 clinicians in this Medicare group
NPI 1942509047 (916) 733-1000

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 4

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.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
250 services241 patients
X-ray of chest, 1 view 71045
A chest X-ray, 1 view, is a quick, painless test that produces images of the structures within your chest, such as your heart, lungs, and blood vessels. It helps in diagnosing conditions like pneumonia, heart problems, or lung cancer. You'll stand in front of a machine that emits X-rays, which pass through your body to create the image.
54 services54 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
38 services37 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
34 services33 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94608 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
$104.51 typical visit price
range $69.00 – $202.35
Typical copayment $26.12 (range $17.25 – $50.58)
Most-billed visit code 99203
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

94.62/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality76.67
Improvement Activities40
Cost97.14

Other Providers at the Same Location NPPES 5

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

DIANNA L LANGE NP
Nurse Practitioner
2100 POWELL STREET, SUITE 900
EMERYVILLE, CA 94608
Alameda County (510) 350-2600
DR. ROBERT F HUXOL DO
Emergency Medicine
2100 POWELL STREET, SUITE 920
EMERYVILLE, CA 94608
Alameda County (510) 350-2600
DR. SCOTT CHUNGYU YU M.D.
Emergency Medicine
2100 POWELL STREET, SUITE 900
EMERYVILLE, CA 94608
Alameda County (510) 350-2649
MS. ANNA DONNA ALONGI PA-C
Physician Assistant
2100 POWELL STREET, SUITE 900
EMERYVILLE, CA 94608
Alameda County (510) 350-2600
MRS. ANTONETTE ANDRES JESKE P.A.
Physician Assistant
2100 POWELL STREET, SUITE 900
EMERYVILLE, CA 94608
Alameda County (510) 350-2600

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 Thomas Wallin's NPI number?

The NPI number for Thomas Wallin is 1881872034. It was assigned to this individual provider in the NPPES registry on February 8, 2008.

Where is Thomas Wallin located?

Thomas Wallin practices at 2100 Powell Street California Emergency Physicians Credentialing Dept, Emeryville, CA 94608. The listed phone number is (888) 267-3880.

What is Thomas Wallin's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Thomas Wallin enrolled in Medicare?

Yes. Thomas Wallin is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Thomas Wallin's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Wallin reassigns Medicare benefits to California Emergency Physc Med Grp (Sacramento, CA). The 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 Thomas Wallin'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 Thomas Wallin was last updated on March 6, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years 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.