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MACKENZIE HOWARD HOLMBERG MD
NPI 1184253080
Internal Medicine in Seattle, WA

Active since April 03, 2020PECOS EnrolledAccepts Medicare Assignment
93.09/100
CMS Quality Rating
4245 ROOSEVELT WAY NE FL 3, SEATTLE, WA 98105(206) 598-8750 Get Directions Write a Review

NPPES record last updated: May 29, 2024. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jun 23, 2020, Apr 3, 2020 (2 updates tracked since 2020).

About Mackenzie Howard Holmberg Md NPPES

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

MACKENZIE HOWARD HOLMBERG MD (NPI 1184253080) is an individual internal medicine provider in Seattle, Washington, licensed in Washington (MD61057155) and active in the NPI registry since April 2020. He is enrolled in Medicare PECOS, is affiliated with University Of Washington Medical Ctr, and is a graduate of University Of Washington School Of Medicine (2020).

NPPES Registry Identity

NPI1184253080
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameMACKENZIE HOWARD HOLMBERGCredential: MD
Location Address4245 ROOSEVELT WAY NE FL 3Seattle, WA 98105-6008
Mailing AddressPo Box 50095Seattle, WA 98145-5095
Phone(206) 598-8750
Sole ProprietorNo
Medical School CMSUniversity Of Washington School Of MedicineGraduated 2020
Enumeration DateApril 3, 2020
Last NPPES UpdateMay 29, 20242 updates tracked since enumeration
NPPES CertifiedMay 29, 2024
✔ NPI 1184253080 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in WA · MD61057155
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedHospitalistTaxonomy 208M00000X · License MD61057155 (WA)
4245 ROOSEVELT WAY NE FL 3, Seattle, WA 98105
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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, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mackenzie Howard Holmberg Md 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 ID1658793302
PECOS Enrollment IDI20230622000913
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 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.

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.
69 services63 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.
54 services37 patients
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.
46 services13 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
35 services35 patients

Hospital Affiliations CMS Care Compare 2

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

University Of Washington Medical Ctr

Acute Care Hospitals · Seattle, WA
3/5 CMS rating
OwnershipGovernment - State
CMS Certification Number500008
Location1959 NE Pacific St Box 356151Seattle, WA 98195 · King County
Emergency services Birthing friendly

Harborview Medical Center

Acute Care Hospitals · Seattle, WA
1/5 CMS rating
OwnershipGovernment - Local
CMS Certification Number500064
Location325 9th AvenueSeattle, WA 98104 · King County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98105 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
$143.76 typical visit price
range $63.67 – $189.37
Typical copayment $35.94 (range $15.91 – $47.34)
Most-billed visit code 99204
Established Patient
$111.00 typical visit price
range $21.12 – $155.00
Typical copayment $27.75 (range $5.28 – $38.75)
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.

93.09/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality73.95
Promoting Interoperability100
Improvement Activities40

Other Providers at the Same Location NPPES 4

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

DR. JEHAN BUDAK M.D.
Internal Medicine
4245 ROOSEVELT WAY NE FL 3
SEATTLE, WA 98105
King County (206) 598-8750
TICARA LEONI ONYEWUENYI MD, MPH
Obstetrics & Gynecology
4245 ROOSEVELT WAY NE FL 3
SEATTLE, WA 98105
King County (206) 598-4225
DARA DELNORA CARLSON ARNP
Nurse Practitioner
4245 ROOSEVELT WAY NE FL 3
SEATTLE, WA 98105
King County (206) 598-8750
CANDACE HAGHIGHI MD
Student in an Organized Health Care Education/Training Program
4245 ROOSEVELT WAY NE FL 3
SEATTLE, WA 98105
King County (206) 598-8750

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 Mackenzie Holmberg's NPI number?

The NPI number for Mackenzie Holmberg is 1184253080. It was assigned to this individual provider in the NPPES registry on April 3, 2020.

Where is Mackenzie Holmberg located?

Mackenzie Holmberg practices at 4245 Roosevelt Way NE Fl 3, Seattle, WA 98105. The listed phone number is (206) 598-8750.

What is Mackenzie Holmberg's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Mackenzie Holmberg enrolled in Medicare?

Yes. Mackenzie Holmberg 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.

What insurance does Mackenzie Holmberg accept?

Health plans from Premera Blue Cross Blue Shield of Alaska list Mackenzie Holmberg 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 Mackenzie Holmberg affiliated with any hospitals?

According to CMS data, Mackenzie Holmberg is affiliated with University Of Washington Medical Ctr and Harborview Medical Center.

When was this NPI record last updated?

The NPPES record for Mackenzie Holmberg was last updated on May 29, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.