1. Home
  2. Directory
  3. California
  4. Petaluma
  5. Nurse Practitioner
  6. NPI Profile

MS. PATRICIA LYNN GRINNELL NP
NPI 1538186457
Nurse Practitioner in Petaluma, CA

Active since July 16, 2006PECOS EnrolledAccepts Medicare Assignment
110 LYNCH CREEK WAY STE A, PETALUMA, CA 94954(707) 763-0600(707) 765-1757 Get Directions Write a Review

NPPES record last updated: November 2, 2021. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Nov 2, 2021, Apr 21, 2021 (2 updates tracked since 2021).

About Ms. Patricia Lynn Grinnell Np NPPES

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

MS. PATRICIA LYNN GRINNELL NP (NPI 1538186457) is an individual nurse practitioner in Petaluma, California, licensed in California (397558) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS and is a graduate of Other (1998).

NPPES Registry Identity

NPI1538186457
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameMS. PATRICIA LYNN GRINNELLCredential: NP
Location Address110 LYNCH CREEK WAY STE APetaluma, CA 94954-2337
Mailing Address110 Lynch Creek Way Ste APetaluma, CA 94954-2337 · (707) 763-0600 · Fax (707) 765-1757
Phone(707) 763-0600
Fax(707) 765-1757
Sole ProprietorNo
Medical School CMSOtherGraduated 1998
Enumeration DateJuly 16, 2006
Last NPPES UpdateNovember 2, 20212 updates tracked since enumeration
NPPES CertifiedNovember 2, 2021
✔ NPI 1538186457 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License✔ Licensed in CA · 397558
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
110 LYNCH CREEK WAY STE A, Petaluma, CA 94954
Open in Google Maps ↗

Other Identifiers 1

MedicaidRN397558CA

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

Ms. Patricia Lynn Grinnell Np 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 ID2062415599
PECOS Enrollment IDI20060822000553
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.

Injection, darbepoetin alfa, 1 microgram (non-esrd use) J0881
Darbepoetin alfa injection is a medication used to treat anemia (low red blood cell count) often caused by chronic kidney disease or chemotherapy. It works by stimulating your body to produce more red blood cells, helping to increase your energy and well-being.
9,280 services20 patients
Injection, denosumab, 1 mg J0897
Denosumab is a medication given via injection to strengthen your bones. It works by slowing down the cells that break down bone, improving bone density and reducing the risk of fractures. It's often used for osteoporosis treatment.
1,860 services17 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.
276 services141 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.
134 services96 patients
Injection of drug or substance under skin or into muscle 96372
This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.
85 services48 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.
58 services50 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94954 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
$96.16 typical visit price
range $63.04 – $187.01
Typical copayment $24.04 (range $15.76 – $46.75)
Most-billed visit code 99203
Established Patient
$109.88 typical visit price
range $21.02 – $153.40
Typical copayment $27.47 (range $5.25 – $38.35)
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.

Other Providers at the Same Location NPPES 2

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

THOMAS SPENCER STANTON II M.D.
Internal Medicine (Hematology & Oncology)
110 LYNCH CREEK WAY STE A
PETALUMA, CA 94954
Sonoma County (707) 763-0600
REDWOOD REGIONAL MEDICAL GROUP, INC.
Internal Medicine (Hematology & Oncology)
110 LYNCH CREEK WAY STE A
PETALUMA, CA 94954
Sonoma County (707) 763-0600

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 Patricia Grinnell's NPI number?

The NPI number for Patricia Grinnell is 1538186457. It was assigned to this individual provider in the NPPES registry on July 16, 2006.

Where is Patricia Grinnell located?

Patricia Grinnell practices at 110 Lynch Creek Way Ste A, Petaluma, CA 94954. The listed phone number is (707) 763-0600.

What is Patricia Grinnell's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Patricia Grinnell enrolled in Medicare?

Yes. Patricia Grinnell 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 Patricia Grinnell was last updated on November 2, 2021. 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.