What is Christopher Carlson's NPI number?

Christopher Carlson's National Provider Identifier (NPI) is 1821011065, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Christopher Carlson's specialty?

Christopher Carlson is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).

Where is Christopher Carlson located?

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

What is Christopher Carlson's phone number?

The practice phone number listed in the NPPES registry for Christopher Carlson is (206) 731-3241.

Does Christopher Carlson accept Medicare?

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

Is Christopher Carlson's NPI active?

Yes — Christopher Carlson's NPI (1821011065) is active in the NPPES registry as of the last update on 2021-04-16.

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Christopher Carlson, M.D.

NPI 1821011065 · Gastroenterology Physician · Seattle, WA

Christopher Carlson, M.D. is a Gastroenterology Physician provider in Seattle, WA (NPI 1821011065).

Provider details

NPI number: 1821011065
Entity type: Individual
Primary specialty: Gastroenterology PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Male
Sole proprietor: No
License: MD00042230 (WA)

Practice location

325 9th Ave

Seattle, WA 98104-2420

Phone: (206) 731-3241

Street-level locationGet directions

More WA providers

Mailing address

Po Box 50095

Seattle, WA 98145-5095

Specialties & taxonomies

Gastroenterology PhysicianPrimary207RG0100XLicense MD00042230 (WA)
Allopathic & Osteopathic Physicians

Additional practice locations (2)

5350 Tallman Ave Nw
Seattle, WA 98107-5902
Phone: (206) 215-4250
Fax: (206) 215-4252
1221 Madison St Ste 1221
Seattle, WA 98104-3588
Phone: (206) 215-4250
Fax: (206) 215-4252

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

Profile Score

Detailed profile(82/100 index)

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

Registry tenure25% of score
20 yrs in NPPES registry
Profile completeness25% of score
100% of core fields populated
Practice footprint15% of score
3 documented practice locations
Medicare service volume (vs. specialty peers)25% of score
392 Medicare services, 2024 (ranked within specialty)
Open Payments transparency10% of score
Has Open Payments disclosures (2024)

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)
Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239	53	$56
Removal of Stone Or Debris From Bile Or Pancreatic Duct Using a Flexible Endoscope43264	46	$219
Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385	36	$240
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	35	$142
Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215	34	$190
Insertion of Guide Wire With Dilation of Esophagus Using a Flexible Endoscope

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Pantoprazole Sodium	43	13
Omeprazole	39	—
Lipase/Protease/Amylasebrand: Creon	33	—
Famotidine	30	—
Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G	24	24
Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf	21	21
Peg3350/Sod Sulf,bicarb,cl/Kcl

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$110 across 1 record (Open Payments 2024)

Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.

Enumerated: 2006-07-26
Last updated: 2021-04-16
Certified: 2021-04-16

Frequently asked questions

What is Christopher Carlson's NPI number?: Christopher Carlson's National Provider Identifier (NPI) is 1821011065, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Christopher Carlson's specialty?: Christopher Carlson is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
Where is Christopher Carlson located?: Christopher Carlson's practice location on file with NPPES is 325 9th Ave, Seattle, WA 98104-2420.
What is Christopher Carlson's phone number?: The practice phone number listed in the NPPES registry for Christopher Carlson is (206) 731-3241.
Does Christopher Carlson accept Medicare?: Christopher Carlson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Christopher Carlson's NPI active?: Yes — Christopher Carlson's NPI (1821011065) is active in the NPPES registry as of the last update on 2021-04-16.

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

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)
Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239	53	$56
Removal of Stone Or Debris From Bile Or Pancreatic Duct Using a Flexible Endoscope43264	46	$219
Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385	36	$240
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	35	$142
Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215	34	$190
Insertion of Guide Wire With Dilation of Esophagus Using a Flexible Endoscope

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Pantoprazole Sodium	43	13
Omeprazole	39	—
Lipase/Protease/Amylasebrand: Creon	33	—
Famotidine	30	—
Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G	24	24
Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf	21	21
Peg3350/Sod Sulf,bicarb,cl/Kcl

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$110 across 1 record (Open Payments 2024)

Provider details

Practice location

Mailing address

Specialties & taxonomies

Additional practice locations (2)

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Transparency — industry payments

Registry dates

Frequently asked questions

Specialties & taxonomies

Additional practice locations (2)

Frequently asked questions

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Transparency — industry payments