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NATHANIEL ROHDE WOODRUFF M.D., PHD, FACC
NPI 1275623191
Internal Medicine - Cardiovascular Disease in Grass Valley, CA

Active since October 13, 2006PECOS EnrolledAccepts Medicare Assignment
150 CATHERINE LN STE F, GRASS VALLEY, CA 95945(530) 477-8358(530) 477-2015 Get Directions Write a Review

NPPES record last updated: February 26, 2019. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Feb 26, 2019, Nov 4, 2016 (2 updates tracked since 2016).

About Nathaniel Rohde Woodruff M.d., Phd, Facc NPPES

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

NATHANIEL ROHDE WOODRUFF M.D., PHD, FACC (NPI 1275623191) is an individual cardiovascular disease provider in Grass Valley, California, licensed in California (C55840) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, is affiliated with Uphs Marquette Dlp Hospital, and is a graduate of Other (1987).

NPPES Registry Identity

NPI1275623191
Entity TypeIndividualMale
Primary Taxonomy207RC0000X
Provider Legal NameNATHANIEL ROHDE WOODRUFFCredential: M.D., PHD, FACC
Location Address150 CATHERINE LN STE FGrass Valley, CA 95945-5719
Mailing Address3400 Data Dr, Attn: Credentialing/payer EnrollmentRancho Cordova, CA 95670-7956
Phone(530) 477-8358
Fax(530) 477-2015
Sole ProprietorYes
Medical School CMSOtherGraduated 1987
Enumeration DateOctober 13, 2006
Last NPPES UpdateFebruary 26, 20192 updates tracked since enumeration
✔ NPI 1275623191 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RC0000X
License✔ Licensed in CA · C55840
Definition
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
150 CATHERINE LN STE F, Grass Valley, CA 95945
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Premera Blue Cross Blue Shield of Alaska.Insurance ›

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

Nathaniel Rohde Woodruff M.d., Phd, Facc 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 ID547250169
PECOS Enrollment IDI20040515000362
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 Nathaniel Woodruff 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
92 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
Providence Health & Services Washington
527 mi
Rural Health
1010 S SCHEUBER RD
Centralia, WA 98531
  • Reassigned Medicare billing, Washington enrollment
  • 646 clinicians in this Medicare group
NPI 1225763949 (360) 827-7966
Dlp Marquette Physician Practices Inc
1,705 mi
Family Medicine
1500 W ICE LAKE RD
Iron River, MI 49935
  • Reassigned Medicare billing, Michigan enrollment
  • 440 clinicians in this Medicare group
NPI 1790033207 (906) 265-5378
Hurley Medical Center
1,936 mi
Urgent Care
8759 MONROE RD
Durand, MI 48429
  • Reassigned Medicare billing, Michigan enrollment
  • 467 clinicians in this Medicare group
NPI 1962937425 (810) 262-2710

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 10

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.

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000
An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.
125 services118 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.
123 services59 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.
114 services109 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.
86 services85 patients
Routine electrocardiogram (ecg) using at least 12 leads with tracing 93005
An Electrocardiogram (ECG) is a simple, painless test that records the heart's electrical activity. Using 12 leads attached to your skin, it generates a tracing of your heart rhythm. It helps detect any heart problems by showing the timing and strength of electrical signals passing through each part of your heart.
58 services58 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.
49 services48 patients

Hospital Affiliations CMS Care Compare

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

Uphs Marquette Dlp Hospital

Acute Care Hospitals · Marquette, MI
3/5 CMS rating
OwnershipGovernment - Local
CMS Certification Number230054
Location850 W Baraga AveMarquette, MI 49855 · Marquette County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95945 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
$133.94 typical visit price
range $58.87 – $176.60
Typical copayment $33.48 (range $14.71 – $44.15)
Most-billed visit code 99204
Established Patient
$73.16 typical visit price
range $19.28 – $144.60
Typical copayment $18.29 (range $4.82 – $36.15)
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.

Referred Medical Equipment & Supplies CMS DME claims 2

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

Full face mask used with positive airway pressure device, each A7030
DME-Other DME · category DE001N
2 suppliers12 claims12 services$119.99 avg. paid by Medicare
Filter, disposable, used with positive airway pressure device A7038
DME-Other DME · category DE001N
3 suppliers13 claims78 services$3.15 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 Nathaniel Woodruff's NPI number?

The NPI number for Nathaniel Woodruff is 1275623191. It was assigned to this individual provider in the NPPES registry on October 13, 2006.

Where is Nathaniel Woodruff located?

Nathaniel Woodruff practices at 150 Catherine Ln Ste F, Grass Valley, CA 95945. The listed phone number is (530) 477-8358.

What is Nathaniel Woodruff's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Nathaniel Woodruff enrolled in Medicare?

Yes. Nathaniel Woodruff 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 Nathaniel Woodruff's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nathaniel Woodruff reassigns Medicare benefits to 4 organizations: Providence Medical Foundation (Napa, CA), Providence Health & Services Washington (Centralia, WA), Dlp Marquette Physician Practices Inc (Iron River, MI) and Hurley Medical Center (Durand, MI). 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 Nathaniel Woodruff's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Nathaniel Woodruff accept?

Health plans from Premera Blue Cross Blue Shield of Alaska list Nathaniel Woodruff as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Nathaniel Woodruff affiliated with any hospitals?

According to CMS data, Nathaniel Woodruff is affiliated with Uphs Marquette Dlp Hospital.

When was this NPI record last updated?

The NPPES record for Nathaniel Woodruff was last updated on February 26, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.