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DR. MARY NEWKIRK M.D.
NPI 1124088323
Family Medicine in Saint Helena, CA

Active since March 23, 2006PECOS EnrolledAccepts Medicare Assignment
10 WOODLAND RD, SAINT HELENA, CA 94574(707) 963-6399(707) 967-5915 Get Directions Write a Review

NPPES record last updated: December 1, 2017. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 1, 2017, Dec 15, 2016 (2 updates tracked since 2016).

About Dr. Mary Newkirk M.d. NPPES

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

DR. MARY NEWKIRK M.D. (NPI 1124088323) is an individual family medicine provider in Saint Helena, California, licensed in California (A37632) and active in the NPI registry since March 2006. She is enrolled in Medicare PECOS, is affiliated with Hilo Medical Center, and is a graduate of University Of Maryland School Of Medicine (1980).

NPPES Registry Identity

NPI1124088323
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameDR. MARY NEWKIRKCredential: M.D.
Location Address10 WOODLAND RDSaint Helena, CA 94574-9554
Mailing AddressPo Box 7096Stockton, CA 95267-0096 · (209) 956-7725 · Fax (209) 956-7733
Phone(707) 963-6399
Fax(707) 967-5915
Sole ProprietorNo
Medical School CMSUniversity Of Maryland School Of MedicineGraduated 1980
Enumeration DateMarch 23, 2006
Last NPPES UpdateDecember 1, 20172 updates tracked since enumeration
✔ NPI 1124088323 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 4

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in CA · A37632
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
Also ListedInternal MedicineTaxonomy 207R00000X · License A37632 (CA)
Also ListedInternal Medicine · Critical Care MedicineTaxonomy 207RC0200X · License A37632 (CA)
Also ListedHospitalistTaxonomy 208M00000X · License A37632 (CA)
10 WOODLAND RD, Saint Helena, CA 94574
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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

Dr. Mary Newkirk M.d. 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 ID3375580962
PECOS Enrollment IDI20091216000619
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

4

Medicare enrollment records show Mary Newkirk reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Providence Medical Foundation
1.4 mi
Obstetrics & Gynecology
1100 TRANCAS ST, SUITE 209
Napa, CA 94558
  • Reassigned Medicare billing, California enrollment
  • 1,699 clinicians in this Medicare group
NPI 1205131950 (707) 251-1850
Aretaeus Telemedicine Inc.
25 mi
Critical Care Medicine
1046 WINDING RIDGE RD
Santa Rosa, CA 95404
  • Reassigned Medicare billing, California enrollment
  • 68 clinicians in this Medicare group
NPI 1548490261 (707) 326-5855
Pacific Redwood Medical Group Inc
76 mi
Emergency Medicine
275 HOSPITAL DR
Ukiah, CA 95482
  • Reassigned Medicare billing, California enrollment
  • 112 clinicians in this Medicare group
NPI 1033103676 (707) 462-7900
Quantum Healthcare Medical Associates Inc.
402 mi
Hospitalist
400 N PEPPER AVE
Colton, CA 92324
  • Reassigned Medicare billing, California and Hawaii enrollments
  • 338 clinicians in this Medicare group
NPI 1568490597 (909) 580-1000

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 4

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
112 services45 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
80 services45 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
28 services27 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
15 services15 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Hilo Medical Center

Acute Care Hospitals · Hilo, HI
2/5 CMS rating
OwnershipGovernment - State
CMS Certification Number120005
Location1190 Waianuenue AvenueHilo, HI 96720 · Hawaii County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94574 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
$98.97 typical visit price
range $65.08 – $192.16
Typical copayment $24.74 (range $16.27 – $48.04)
Most-billed visit code 99203
Established Patient
$113.15 typical visit price
range $21.86 – $157.83
Typical copayment $28.28 (range $5.46 – $39.45)
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.

Reported Quality Measures

Care Plan
Percentage of patients aged 65 years and older who have an advance care plan or surrogate decision maker documented in the medical record that an advance care plan was discussed but the patient did not wish or was not able to name a surrogate decision maker…
100%29 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.

Referred Medical Equipment & Supplies CMS DME claims 3

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

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
1 supplier20 claims20 services$19.18 avg. paid by Medicare
Home ventilator, any type, used with non-invasive interface, (e.g., mask, chest shell) E0466
DME-Other DME · category DE005N
1 supplier12 claims12 services$768.64 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
1 supplier20 claims20 services$107.50 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

DOUGLAS PHILIP TAPPER M.D.
Internal Medicine (Critical Care Medicine)
10 WOODLAND RD
SAINT HELENA, CA 94574
Napa County (707) 963-6399
DR. GEOFFREY WILLIAM HORN DO
Radiology (Diagnostic Radiology)
10 WOODLAND RD
SAINT HELENA, CA 94574
Napa County (707) 963-6430
KATHERINE LYNN SALLAS
Perfusionist
10 WOODLAND RD
SAINT HELENA, CA 94574
Napa County (707) 963-3611
DAN CLAY M.D.
Emergency Medicine
10 WOODLAND RD
SAINT HELENA, CA 94574
Napa County (707) 963-6311
NAZIR J. HABIB MD
Internal Medicine (Critical Care Medicine)
10 WOODLAND RD
SAINT HELENA, CA 94574
Napa County (707) 963-6399
SEANEEN WHALEY F.N.P
Nurse Practitioner (Family)
10 WOODLAND RD, ICU ROOM 500
SAINT HELENA, CA 94574
Napa County (707) 963-6445
MONA HUISMAN
Occupational Therapist
10 WOODLAND RD
SAINT HELENA, CA 94574
Napa County (707) 963-6596
ADVENTIST HEALTH CALIFORNIA MEDICAL GROUP, INC.
Preventive Medicine (Public Health & General Preventive Medicine)
10 WOODLAND RD
SAINT HELENA, CA 94574
Napa County (707) 963-2002

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 Mary Newkirk's NPI number?

The NPI number for Mary Newkirk is 1124088323. It was assigned to this individual provider in the NPPES registry on March 23, 2006.

Where is Mary Newkirk located?

Mary Newkirk practices at 10 Woodland Rd, Saint Helena, CA 94574. The listed phone number is (707) 963-6399.

What is Mary Newkirk's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Mary Newkirk enrolled in Medicare?

Yes. Mary Newkirk 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 Mary Newkirk's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mary Newkirk reassigns Medicare benefits to 4 organizations: Providence Medical Foundation (Napa, CA), Aretaeus Telemedicine Inc. (Santa Rosa, CA), Pacific Redwood Medical Group Inc (Ukiah, CA) and Quantum Healthcare Medical Associates Inc. (Colton, 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 Mary Newkirk's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Mary Newkirk affiliated with any hospitals?

According to CMS data, Mary Newkirk is affiliated with Hilo Medical Center.

When was this NPI record last updated?

The NPPES record for Mary Newkirk was last updated on December 1, 2017. 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.