DR. WILLIAM MORRIS MITCHELL MD
NPI 1669634663
Internal Medicine - Hospice and Palliative Medicine in San Diego, CA

Active since June 30, 2008PECOS EnrolledAccepts Medicare Assignment
200 W ARBOR DR, SAN DIEGO, CA 92103(858) 822-6100(858) 822-6352 Get Directions Write a Review

NPPES record last updated: November 13, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Nov 13, 2025, Jul 5, 2018 (2 updates tracked since 2018).

About Dr. William Morris Mitchell Md NPPES

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

DR. WILLIAM MORRIS MITCHELL MD (NPI 1669634663) is an individual hospice and palliative medicine provider in San Diego, California, licensed in California (A92024) and active in the NPI registry since June 2008. He is enrolled in Medicare PECOS and is a graduate of University Of Utah School Of Medicine (2002).

NPPES Registry Identity

NPI1669634663
Entity TypeIndividualMale
Primary Taxonomy207RH0002X
Provider Legal NameDR. WILLIAM MORRIS MITCHELLCredential: MD
Location Address200 W ARBOR DRSan Diego, CA 92103
Mailing AddressFile 57326Los Angeles, CA 90074-7326 · (800) 926-8273
Fax(858) 822-6352
Sole ProprietorNo
Medical School CMSUniversity Of Utah School Of MedicineGraduated 2002
Enumeration DateJune 30, 2008
Last NPPES UpdateNovember 13, 20252 updates tracked since enumeration
NPPES CertifiedNovember 13, 2025
NPI 1669634663 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyInternal Medicine · Hospice and Palliative MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RH0002X
License Licensed in CA · A92024
Definition

An internal medicine physician with special knowledge and skills to prevent and relieve the suffering experienced by patients with life-limiting illnesses. This specialist works with an interdisciplinary hospice or palliative care team to maximize quality of life while addressing physical, psychological, social and spiritual needs of both patient and family throughout the course of the disease, through the dying process, and beyond for the family. This specialist has expertise in the assessment of patients with advanced disease; the relief of distressing symptoms; the coordination of interdisciplinary patient and family-centered care in diverse venues; the use of specialized care systems including hospice; the management of the imminently dying patient; and legal and ethical decision making in end-of-life care.

Also ListedInternal Medicine · Hematology & OncologyTaxonomy 207RH0003X · License A92024 (CA)
200 W ARBOR DR, San Diego, CA 92103

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Dr. William Morris Mitchell 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 ID2567514797
PECOS Enrollment IDI20090717000566
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.

Areas of Expertise CMS Part B claims 7

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 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.
210 services64 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.
153 services42 patients
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.
116 services49 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.
55 services36 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.
23 services16 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
20 services20 patients

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.

Internal Medicine (Nephrology)
200 W ARBOR DR, OWEN CLINIC
SAN DIEGO, CA 92103
Anesthesiology
200 W ARBOR DR
SAN DIEGO, CA 92103
Anesthesiology
200 W ARBOR DR, UCSD MED CENTER
SAN DIEGO, CA 92103
Internal Medicine (Nephrology)
200 W ARBOR DR, UCSD MEDICAL CENTER, SUITE 8781
SAN DIEGO, CA 92103
Emergency Medicine
200 W ARBOR DR
SAN DIEGO, CA 92103
Orthopaedic Surgery
200 W ARBOR DR, ORTHOPAEDIC SURGERY CLINIC, MAIL CODE 8670
SAN DIEGO, CA 92103
Radiology (Diagnostic Radiology)
200 W ARBOR DR, MC 8756
SAN DIEGO, CA 92103
Internal Medicine (Cardiovascular Disease)
200 W ARBOR DR
SAN DIEGO, CA 92103

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 William Mitchell's NPI number?

The NPI number for William Mitchell is 1669634663. It was assigned to this individual provider in the NPPES registry on June 30, 2008.

Where is William Mitchell located?

William Mitchell practices at 200 W Arbor Dr, San Diego, CA 92103. The listed phone number is (858) 822-6100.

What is William Mitchell's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hospice and Palliative Medicine, with taxonomy code 207RH0002X.

Is William Mitchell enrolled in Medicare?

Yes. William Mitchell 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.

When was this NPI record last updated?

The NPPES record for William Mitchell was last updated on November 13, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.