What is Matthew Hallman's NPI number?

Matthew Hallman's National Provider Identifier (NPI) is 1992958540, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Matthew Hallman's specialty?

Matthew Hallman is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).

Where is Matthew Hallman located?

Matthew Hallman's practice location on file with NPPES is 325 9th Ave, Seattle, WA 98104-2420.

What is Matthew Hallman's phone number?

The practice phone number listed in the NPPES registry for Matthew Hallman is (206) 744-4684.

Does Matthew Hallman accept Medicare?

Matthew Hallman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Matthew Hallman's NPI active?

Yes — Matthew Hallman's NPI (1992958540) is active in the NPPES registry as of the last update on 2014-12-30.

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Matthew Hallman, M.D.

NPI 1992958540 · Anesthesiology Physician · Seattle, WA

Matthew Hallman, M.D. is a Anesthesiology Physician provider in Seattle, WA (NPI 1992958540).

Provider details

NPI number: 1992958540
Entity type: Individual
Primary specialty: Anesthesiology PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Male
Sole proprietor: Yes
License: MD60152419 (WA)

Practice location

325 9th Ave

Box 359724

Seattle, WA 98104-2420

Phone: (206) 744-4684

Street-level locationGet directions

More WA providers

Mailing address

1229 Madison St Ste 1440

Seattle, WA 98104-3538

Specialties & taxonomies

Anesthesiology PhysicianPrimary207L00000XLicense MD60152419 (WA)
Allopathic & Osteopathic Physicians
Critical Care Medicine (Anesthesiology) Physician207LC0200XLicense MD60152419 (WA)
Allopathic & Osteopathic Physicians

Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Established profile(65/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure28% of score
18 yrs in NPPES registry
Profile completeness28% of score
100% of core fields populated
Practice footprint17% of score
1 documented practice location
Medicare service volume (vs. specialty peers)28% of score
30 Medicare services, 2024 (ranked within specialty)

Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232	19	$86
Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222	11	$137

Typical Medicare-allowed amounts for these services range $86–$137 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.

Enumerated: 2008-10-28
Last updated: 2014-12-30

Frequently asked questions

What is Matthew Hallman's NPI number?: Matthew Hallman's National Provider Identifier (NPI) is 1992958540, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Matthew Hallman's specialty?: Matthew Hallman is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
Where is Matthew Hallman located?: Matthew Hallman's practice location on file with NPPES is 325 9th Ave, Seattle, WA 98104-2420.
What is Matthew Hallman's phone number?: The practice phone number listed in the NPPES registry for Matthew Hallman is (206) 744-4684.
Does Matthew Hallman accept Medicare?: Matthew Hallman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Matthew Hallman's NPI active?: Yes — Matthew Hallman's NPI (1992958540) is active in the NPPES registry as of the last update on 2014-12-30.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider does (Medicare)

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider does (Medicare)