DR. CAROLINE ALEXANDRA HARSTROEM M.D.
NPI 1396131975
Anesthesiology - Pain Medicine in Everett, WA

Q: What is Caroline Harstroem's NPI number?

The NPI number for Caroline Harstroem is 1396131975. It was assigned to this individual provider in the NPPES registry on April 10, 2015.

Q: What is Caroline Harstroem's specialty?

The primary specialty registered for this NPI is Anesthesiology, specializing in Pain Medicine, with taxonomy code 207LP2900X.

Active since April 10, 2015PECOS EnrolledAccepts Medicare Assignment

3305 NASSAU ST STE A, EVERETT, WA 98201(206) 538-6300(206) 538-6301 Get Directions Write a Review

NPPES record last updated: February 15, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Feb 15, 2023, Feb 9, 2023, Mar 10, 2022 and 1 more (4 updates tracked since 2020).

On this page

About Dr. Caroline Alexandra Harstroem M.d. NPPES

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

DR. CAROLINE ALEXANDRA HARSTROEM M.D. (NPI 1396131975) is an individual pain medicine provider in Everett, Washington, licensed in Washington (MD61097991) and active in the NPI registry since April 2015. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2014).

NPPES Registry Identity

NPI1396131975

Entity TypeIndividualFemale

Primary Taxonomy207LP2900X

Provider Legal NameDR. CAROLINE ALEXANDRA HARSTROEMCredential: M.D.

Location Address3305 NASSAU ST STE AEverett, WA 98201-4140

Mailing Address801 Sw 16th St Ste 121Renton, WA 98057-2628 · (206) 538-6300 · Fax (206) 538-6301

Phone(206) 538-6300

Fax(206) 538-6301

Sole ProprietorNo

Medical School CMSOtherGraduated 2014

Enumeration DateApril 10, 2015

Last NPPES UpdateFebruary 15, 20234 updates tracked since enumeration

NPPES CertifiedFebruary 15, 2023

✔ NPI 1396131975 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyAnesthesiology · Pain MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207LP2900X

Licenses✔ Licensed in WA · MD61097991✔ Licensed in WA · FE.60964666

Definition

An anesthesiologist who provides a high level of care, either as a primary physician or consultant, for patients experiencing problems with acute, chronic and/or cancer pain in both hospital and ambulatory settings. Patient care needs are also coordinated with other specialists.

Also ListedPain Medicine · Pain MedicineTaxonomy 208VP0000X · License MD61097991 (WA)

Also ListedPain Medicine · Interventional Pain MedicineTaxonomy 208VP0014X · License MD61097991 (WA)

3305 NASSAU ST STE A, Everett, WA 98201

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Secondary Practice Locations 2

Location 1155 Lilly Rd NE Ste BOlympia, WA 98506-5028 · Phone (206) 538-6300 · Fax (206) 538-6301

Location 21628 S Mildred St Ste 102Tacoma, WA 98465-1628 · Phone (206) 538-6300 · Fax (206) 538-6301

Other Identifiers 1

Medicaid2136213WA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Providence Health Plan.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

Dr. Caroline Alexandra Harstroem 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 ID3173832573

PECOS Enrollment IDI20201014001847

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 Caroline Harstroem reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Pain Care Physicians PLLC

Same address

Interventional Pain Medicine

3305 NASSAU ST STE A
Everett, WA 98201

Reassigned Medicare billing, Washington enrollment
Also billed through NPI 1144779232 (Washington)
19 clinicians in this Medicare group

NPI 1477116697 (206) 538-6300

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 17

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, triamcinolone acetonide, not otherwise specified, 10 mg J3301

Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.

115 services27 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.

110 services78 patients

Drug test(s), definitive, utilizing (1) drug identification methods able to identify individual drugs and distinguish between structural isomers (but not necessarily stereoisomers), including, but not limited to gc/ms (any type, single or tandem) and lc/ms G0482

A definitive drug test identifies specific drugs in your system. Advanced methods like GC/MS (Gas Chromatography/Mass Spectrometry) and LC/MS (Liquid Chromatography/Mass Spectrometry) are used. These can distinguish between similar drugs, providing precise results.

65 services54 patients

Insertion of spinal neurostimulator electrode array through skin 63650

This procedure involves placing a small device, called a neurostimulator electrode array, under your skin near your spine. It delivers mild electrical signals to your spinal cord, helping to manage chronic pain.

50 services16 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.

44 services36 patients

Low osmolar contrast material, 200-299 mg/ml iodine concentration, per ml Q9966

Low osmolar contrast material with 200-299 mg/ml iodine concentration is a type of dye used in certain medical tests like CT scans or X-rays. It helps to highlight specific areas in your body, making them easier to see and examine. It's safe and commonly used.

36 services29 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.

28 services23 patients

Injection of anesthetic or steroid into joint between lower spine and hip bone using imaging guidance 27096

This procedure involves injecting medicine into the joint where your lower spine meets your hip bone. Using special imaging technology, the doctor ensures the medicine is delivered accurately. This can help reduce pain and inflammation in that area.

24 services20 patients

Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes 99152

This procedure involves a doctor administering a medication to reduce your consciousness during a procedure. This helps in managing discomfort and anxiety. The initial application lasts for 15 minutes and is for individuals aged 5 years or older.

22 services21 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

20 services20 patients

Aspiration and/or injection of fluid from large joint 20610

This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.

18 services15 patients

Fluoroscopic guidance for needle placement 77002

Fluoroscopic guidance for needle placement is a medical procedure that uses a special X-ray technology to help accurately place a needle in the body. It's often used in biopsies, injections or other treatments to ensure precision and safety.

18 services15 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

16 services16 patients

Telephone medical discussion with physician, 11-20 minutes 99442

This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.

16 services16 patients

Insertion or replacement of spinal neurostimulator generator or receiver 63685

The insertion of a spinal neurostimulator generator or receiver is a procedure to manage chronic pain. A small device is implanted under your skin, which sends mild electrical signals to your spinal cord. These signals disrupt pain signals, helping to reduce discomfort.

12 services12 patients

Destruction of lower or sacral spinal facet joint nerves using imaging guidance, single facet joint 64635

This procedure involves using imaging guidance to accurately target and destroy nerves in the lower or sacral spinal facet joint. It's done to relieve chronic back pain. The process is safe and usually effective.

12 services12 patients

Destruction of lower or sacral spinal facet joint nerves using imaging guidance, each additional facet joint 64636

This procedure involves using imaging technology to locate and treat nerves in your lower spine or sacral area that may be causing pain. Each additional facet joint refers to treating more than one spinal nerve. It's a non-invasive way to manage chronic back pain.

12 services12 patients

Other Providers at the Same Location NPPES

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

PAIN CARE PHYSICIANS PLLC

Pain Medicine (Interventional Pain Medicine)

3305 NASSAU ST STE A
EVERETT, WA 98201

Snohomish County (206) 538-6300

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 Caroline Harstroem's NPI number?

The NPI number for Caroline Harstroem is 1396131975. It was assigned to this individual provider in the NPPES registry on April 10, 2015.

Where is Caroline Harstroem located?

Caroline Harstroem practices at 3305 Nassau St Ste A, Everett, WA 98201. The listed phone number is (206) 538-6300.

What is Caroline Harstroem's specialty?

The primary specialty registered for this NPI is Anesthesiology, specializing in Pain Medicine, with taxonomy code 207LP2900X.

Is Caroline Harstroem enrolled in Medicare?

Yes. Caroline Harstroem 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 organization bills Medicare for Caroline Harstroem's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Caroline Harstroem reassigns Medicare benefits to Pain Care Physicians PLLC (Everett, WA). 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 Caroline Harstroem's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Caroline Harstroem accept?

Health plans from Providence Health Plan list Caroline Harstroem 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.

When was this NPI record last updated?

The NPPES record for Caroline Harstroem was last updated on February 15, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.