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DR. MARK ELLIOT SOCKELL MD
NPI 1194810952
Internal Medicine - Geriatric Medicine in Point Reyers, CA

Active since October 04, 2006PECOS Enrolled
WEST MARIN MEDICAL CENTER, 11150 STATE ROUTE 1, POINT REYERS, CA 94956(415) 663-1082(415) 663-9474 Get Directions Write a Review

NPPES record last updated: September 8, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Mark Elliot Sockell Md NPPES

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

DR. MARK ELLIOT SOCKELL MD (NPI 1194810952) is an individual geriatric medicine provider in Point Reyers, California, licensed in California (G53283) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1194810952
Entity TypeIndividualMale
Primary Taxonomy207RG0300X
Provider Legal NameDR. MARK ELLIOT SOCKELLCredential: MD
Location AddressWEST MARIN MEDICAL CENTER, 11150 STATE ROUTE 1Point Reyers, CA 94956
Mailing Address1952 Centro West StTiburon, CA 94920 · (650) 302-0394 · Fax (856) 341-7808
Phone(415) 663-1082
Fax(415) 663-9474
Sole ProprietorYes
Enumeration DateOctober 4, 2006
Last NPPES UpdateSeptember 8, 2022
NPPES CertifiedSeptember 8, 2022
✔ NPI 1194810952 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Geriatric MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RG0300X
License✔ Licensed in CA · G53283
Definition
An internist who has special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the patient's home, the office, long-term care settings such as nursing homes and the hospital.
Also ListedInternal MedicineTaxonomy 207R00000X · License G53283 (CA)
WEST MARIN MEDICAL CENTER, Point Reyers, CA 94956
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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 (PECOS)

Dr. Mark Elliot Sockell Md 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 Mark Sockell reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Colin Hamblin, A Professional Medical Corporation
4.1 mi
Family Medicine
11150 HIGHWAY 1
Point Reyes Station, CA 94956
  • Reassigned Medicare billing, California enrollment
  • 3 clinicians in this Medicare group
NPI 1649664087 (415) 663-1082

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94956 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
$202.63 typical visit price
range $69.07 – $202.63
Typical copayment $50.65 (range $17.26 – $50.65)
Most-billed visit code 99205
Established Patient
$119.61 typical visit price
range $23.44 – $166.64
Typical copayment $29.90 (range $5.86 – $41.66)
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.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Standard wheelchair K0001
DME-Wheelchairs · category DD000N
1 supplier11 claims11 services$16.94 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 Mark Sockell's NPI number?

The NPI number for Mark Sockell is 1194810952. It was assigned to this individual provider in the NPPES registry on October 4, 2006.

Where is Mark Sockell located?

Mark Sockell practices at West Marin Medical Center 11150 State Route 1, Point Reyers, CA 94956. The listed phone number is (415) 663-1082.

What is Mark Sockell's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Geriatric Medicine, with taxonomy code 207RG0300X.

Is Mark Sockell enrolled in Medicare?

Yes. Mark Sockell is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Mark Sockell's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Sockell reassigns Medicare benefits to Colin Hamblin, A Professional Medical Corporation (Point Reyes Station, 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 Mark Sockell'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 Mark Sockell was last updated on September 8, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.