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Internal Medicine in Portland, OR
Dr Merrill Marshall Ahrens, Internist in Portland, OR
Merrill Marshall Ahrens is an internal medicine physician at 19500 SE Stark St in Portland, OR. View phone 503-669-3900 and NPI 1194839225.
- Specialty
- Internal Medicine
- Location
- Portland, OR
- NPI
- 1194839225
- Pricing
- Current estimate required
Pricing information
Loa does not yet have a verified provider-submitted price for this listing. Ask the provider and your insurer for a current estimate before scheduling care.
About Internal Medicine
Primary care providers handle preventive visits, common illness care, screenings, and ongoing management of chronic conditions. Office visits, labs, and immunizations are among the most frequently billed services.
Common services and price guides
- Doctor Office VisitTypical range: $100-$350
- New Patient VisitTypical range: $150-$500
- Annual Physical ExamTypical range: $100-$500
- Flu ShotTypical range: $20-$80
CMS Medicare clinician details
For NPI 1194839225, the CMS Doctors and Clinicians National Downloadable File released July 9, 2026 reports Internal Medicine.
- Medicare assignment
- Accepts the Medicare-approved amount
- Medical school
- Northwestern University Feinberg Medical School
- Graduation year
- 1989
- Telehealth
- Medicare claims indicate telehealth services
CMS enrollment records list group affiliations including Legacy Clinics Llc, Legacy Emanuel Hospital And Health Center, and Legacy Good Samaritan Hospital And Medical Center.
Review the CMS source dataset. Confirm current participation and services directly with the provider.
How to confirm pricing with Merrill Marshall Ahrens MD
Published and estimated prices are a starting point. Confirm these details before scheduling to avoid surprises.
Confirm the billing code and setting
Verify the CPT or other billing code and whether care is billed as an office, outpatient, or hospital service.
Check insurance benefits
Ask your insurer about network status, deductible progress, prior authorization, and expected patient responsibility.
Get an itemized estimate
Compare the written estimate with source-labeled prices and ask which additional services could be billed.
Provider record and data sources
Merrill Marshall Ahrens MD is published from source-labeled provider data. Registry classifications, practice locations, network participation, and contact information can change, so verify current details before care, billing, or referral.
- Primary taxonomyInternal Medicine (207R00000X)
- NPI record datesEnumerated August 18, 2006
Source: NPI Registry. Source record updated July 8, 2007. Loa profile refreshed Jul 21, 2026.
Frequently asked questions
Can I see prices for Merrill Marshall Ahrens MD?
Loa does not yet have a verified provider-submitted price for Merrill Marshall Ahrens MD. Ask the office for a written self-pay estimate and compare nearby source-labeled prices before scheduling.
What information is shown for Merrill Marshall Ahrens MD?
This profile shows public provider information for Internal Medicine in Portland, OR, including contact details, NPI source information, and source-labeled price context when available.
What NPI taxonomy is listed for Merrill Marshall Ahrens MD?
Merrill Marshall Ahrens MD is listed as an NPI individual under Internal Medicine (207R00000X). Registry classifications can change and do not guarantee that every listed service is currently offered.
When was NPI 1194839225 assigned to Merrill Marshall Ahrens MD?
The NPI Registry lists August 18, 2006 as the enumeration date for NPI 1194839225. These are registry dates, not necessarily the date the provider began practicing.
What Medicare specialty does CMS list for Merrill Marshall Ahrens MD?
The CMS Doctors and Clinicians file lists Internal Medicine for NPI 1194839225. Medicare enrollment details can change, so confirm current credentials, participation, and services directly.
Does Merrill Marshall Ahrens MD accept Medicare assignment?
The CMS record indicates that Merrill Marshall Ahrens MD accepts the Medicare-approved amount as payment in full. Confirm current participation, network status, and patient responsibility before care.
How should I confirm care details with Merrill Marshall Ahrens MD?
Contact the office before care to confirm the location, appointment availability, network participation, exact service and billing code, and all expected professional or facility fees.
How can Merrill Marshall Ahrens MD update this profile?
The provider or an authorized representative can claim the profile or suggest a correction. Loa reviews submitted changes before publishing them.