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ADELYN TU-CHAN D.O.
NPI 1720310329
Psychiatry & Neurology - Neurology in Alameda, CA

Active since February 05, 2010PECOS EnrolledAccepts Medicare Assignment
74.46/100
CMS Quality Rating
2142 PACIFIC AVE, ALAMEDA, CA 94501(510) 517-1789 Get Directions Write a Review

NPPES record last updated: October 8, 2018. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Adelyn Tu-chan D.o. NPPES

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

ADELYN TU-CHAN D.O. (NPI 1720310329) is an individual neurology provider in Alameda, California, licensed in California (1720310329) and active in the NPI registry since February 2010. She is enrolled in Medicare PECOS and is a graduate of Other (2009).

NPPES Registry Identity

NPI1720310329
Entity TypeIndividualFemale
Primary Taxonomy2084N0400X
Provider Legal NameADELYN TU-CHANCredential: D.O.
Location Address2142 PACIFIC AVEAlameda, CA 94501-1427
Mailing Address2142 Pacific AveAlameda, CA 94501-1427 · (510) 517-1789
Phone(510) 517-1789
Sole ProprietorNo
Medical School CMSOtherGraduated 2009
Enumeration DateFebruary 5, 2010
Last NPPES UpdateOctober 8, 2018
✔ NPI 1720310329 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · NeurologyAllopathic & Osteopathic Physicians
Taxonomy Code2084N0400X
License✔ Licensed in CA · 1720310329
Definition
A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
2142 PACIFIC AVE, Alameda, CA 94501
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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

Adelyn Tu-chan D.o. 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 ID3577817311
PECOS Enrollment IDI20181114003264
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 Adelyn Tu-chan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Of California San Francisco
12 mi
Surgery
400 PARNASSUS AVE, MCB 300
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 5,645 clinicians in this Medicare group
NPI 1346329380 (415) 353-2161
Ucsf Medical Group Business Services
12 mi
Internal Medicine
400 PARNASSUS AVE
San Francisco, CA 94122
  • Reassigned Medicare billing, California enrollment
  • 5,544 clinicians in this Medicare group
NPI 1477624104 (415) 353-2808

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 8

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.

Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or G2212
This service refers to extended doctor visits where your healthcare provider spends additional time evaluating and managing your health beyond the primary procedure's required time. This includes each extra 15 minutes spent by the physician on the same day as the primary service.
277 services51 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
100 services53 patients
Needle measurement of electrical activity in muscle with injection of chemical for paralysis of nerve muscle 95874
This procedure involves a needle that measures the electrical activity in your muscles. A chemical is then injected to temporarily paralyze the nerve muscle. This helps in diagnosing and treating certain muscle or nerve conditions.
55 services28 patients
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or G2212
This service refers to extended doctor visits where your healthcare provider spends additional time evaluating and managing your health beyond the primary procedure's required time. This includes each extra 15 minutes spent by the physician on the same day as the primary service.
55 services20 patients
Injection of chemical for paralysis of nerve muscles on arm or leg, 1-4 muscles, each additional extremity 64643
This procedure involves injecting a special chemical into 1-4 muscles in an arm or leg to temporarily paralyze them. This can help manage pain or muscle disorders. If needed, the process can be repeated on an additional limb.
37 services19 patients
Injection of chemical for paralysis of nerve muscles on arm or leg, 1-4 muscles, first extremity 64642
This procedure involves injecting a chemical into specific muscles in your arm or leg, causing temporary paralysis. It targets 1-4 muscles in the first extremity. It's often used to manage conditions that cause muscle spasms or overactivity.
28 services15 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94501 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
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
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.

74.46/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Promoting Interoperability76
Improvement Activities40
Cost46.68

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 Adelyn Tu-chan's NPI number?

The NPI number for Adelyn Tu-chan is 1720310329. It was assigned to this individual provider in the NPPES registry on February 5, 2010.

Where is Adelyn Tu-chan located?

Adelyn Tu-chan practices at 2142 Pacific Ave, Alameda, CA 94501. The listed phone number is (510) 517-1789.

What is Adelyn Tu-chan's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

Is Adelyn Tu-chan enrolled in Medicare?

Yes. Adelyn Tu-chan 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 Adelyn Tu-chan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Adelyn Tu-chan reassigns Medicare benefits to 2 organizations: University Of California San Francisco (San Francisco, CA) and Ucsf Medical Group Business Services (San Francisco, CA). 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 Adelyn Tu-chan'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 Adelyn Tu-chan was last updated on October 8, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.