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DR. DIANA DEANGELIS PARNELL M.D.
NPI 1811926652
Dermatology in Greenbrae, CA

Active since July 02, 2006PECOS Enrolled
1100 S ELISEO DR, SUITE 2, GREENBRAE, CA 94904(415) 461-1036(415) 461-1043 Get Directions Write a Review

NPPES record last updated: January 20, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Diana Deangelis Parnell M.d. NPPES

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

DR. DIANA DEANGELIS PARNELL M.D. (NPI 1811926652) is an individual dermatology provider in Greenbrae, California, licensed in California (G18571) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS and maintains a secondary practice location in Kentfield.

NPPES Registry Identity

NPI1811926652
Entity TypeIndividualFemale
Primary Taxonomy207N00000X
Provider Legal NameDR. DIANA DEANGELIS PARNELLCredential: M.D.
Location Address1100 S ELISEO DR, SUITE 2Greenbrae, CA 94904-2017
Mailing Address1100 S Eliseo Dr, Suite 2Greenbrae, CA 94904-2017 · (415) 461-1036 · Fax (415) 461-1043
Phone(415) 461-1036
Fax(415) 461-1043
Sole ProprietorNo
Enumeration DateJuly 2, 2006
Last NPPES UpdateJanuary 20, 2025
NPPES CertifiedJanuary 20, 2025
✔ NPI 1811926652 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyDermatologyAllopathic & Osteopathic Physicians
Taxonomy Code207N00000X
License✔ Licensed in CA · G18571
Definition
A dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The dermatologist has had additional training and experience in the diagnosis and treatment of skin cancers, melanomas, moles and other tumors of the skin, the management of contact dermatitis and other allergic and nonallergic skin disorders, and in the recognition of the skin manifestations of systemic (including internal malignancy) and infectious diseases. Dermatologists have special training in dermatopathology and in the surgical techniques used in dermatology. They also have expertise in the management of cosmetic disorders of the skin such as hair loss and scars and the skin changes associated with aging.
Also ListedDermatology · DermatopathologyTaxonomy 207ND0900X · License G185710 (CA)
Also ListedDermatology · Procedural DermatologyTaxonomy 207NS0135X · License G18571 (CA)
1100 S ELISEO DR, Greenbrae, CA 94904
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Secondary Practice Location 1

Location 11030 Sir Francis Drake Blvd Ste 110Kentfield, CA 94904-1439 · Phone (415) 461-1036 · Fax (415) 461-1043

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Diana Deangelis Parnell 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 Diana Parnell reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Csi Medical Group
375 mi
MOHS-Micrographic Surgery
1360 W 6TH ST STE 370
San Pedro, CA 90732
  • Reassigned Medicare billing, California enrollment
  • 179 clinicians in this Medicare group
NPI 1871909804 (310) 519-8890

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.

Destruction of precancer skin growth, 2-14 growths 17003
This procedure involves removing 2-14 precancerous skin growths. The growths are treated to prevent them from potentially developing into skin cancer. The process is safe, with minimal discomfort, and promotes healthier skin.
202 services42 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.
80 services63 patients
Destruction of precancer skin growth, 1 growth 17000
"Destruction of precancer skin growth" is a procedure that eliminates a single precancerous skin growth. This is done to prevent it from developing into skin cancer. The growth may be removed using various methods such as cryotherapy (freezing), laser therapy, or topical medications.
66 services57 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.
62 services61 patients
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212
This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
23 services23 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94904 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
$104.67 typical visit price
range $69.07 – $202.63
Typical copayment $26.16 (range $17.26 – $50.65)
Most-billed visit code 99203
Established Patient
$85.00 typical visit price
range $23.44 – $166.64
Typical copayment $21.25 (range $5.86 – $41.66)
Most-billed visit code 99213
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.

Reported Quality Measures

Biopsy Follow-Up
Percentage of new patients whose biopsy results have been reviewed and communicated to the primary care/referring physician and patient by the performing physician
100%44 patients5/55-star benchmark: 100%
Documentation of Current Medications in the Medical Record
Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter.
100%65 patients5/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 16

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

PETER UZELAC MD, INC
Specialist
1100 S ELISEO DR, SUITE 107
GREENBRAE, CA 94904
Marin County (415) 925-9409
MFC SURGERY CENTER
Obstetrics & Gynecology (Reproductive Endocrinology)
1100 S ELISEO DR, STE 107
GREENBRAE, CA 94904
Marin County (415) 925-9404
DR. LAURA K. PAK M.D.
Surgery (Vascular Surgery)
1100 S ELISEO DR, SUITE 2A
GREENBRAE, CA 94904
Marin County (415) 464-5400
MARIN ENDOSCOPY CENTER, LLC
Clinic/Center (Ambulatory Surgical)
1100 S ELISEO DR, SUITE 3
GREENBRAE, CA 94904
Marin County (415) 464-0606
PARNELL MEDICAL CORPORATION
Dermatology
1100 S ELISEO DR, SUITE 2
GREENBRAE, CA 94904
Marin County (415) 461-1036
DR. RINA S MARFATIA M.B.B.S., M.D.
Internal Medicine (Infectious Disease)
1100 S ELISEO DR, SUITE 2A
GREENBRAE, CA 94904
Marin County (415) 795-7000
MS. KAREN ANN REYNOLDS L.AC., R.N.
Acupuncturist
1100 S ELISEO DR
GREENBRAE, CA 94904
Marin County (415) 461-3200
MARIN PEDIATRIC ASSOCIATES, A MEDICAL CORPORATION
Pediatrics
1100 S ELISEO DR, STE 106
GREENBRAE, CA 94904
Marin County (415) 461-8828

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 Diana Parnell's NPI number?

The NPI number for Diana Parnell is 1811926652. It was assigned to this individual provider in the NPPES registry on July 2, 2006.

Where is Diana Parnell located?

Diana Parnell practices at 1100 S Eliseo Dr Suite 2, Greenbrae, CA 94904. The listed phone number is (415) 461-1036.

What is Diana Parnell's specialty?

The primary specialty registered for this NPI is Dermatology with taxonomy code 207N00000X.

Is Diana Parnell enrolled in Medicare?

Yes. Diana Parnell is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Diana Parnell's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Diana Parnell reassigns Medicare benefits to Csi Medical Group (San Pedro, 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 Diana Parnell'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 Diana Parnell was last updated on January 20, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 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.