DR. MARIANA HARASAWA MD
NPI 1154785863
Ophthalmology - Retina Specialist in Denver, CO
About Dr. Mariana Harasawa Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARIANA HARASAWA MD (NPI 1154785863) is an individual retina specialist in Denver, Colorado, licensed in Colorado (DR.0065005) and active in the NPI registry since April 2016. She is enrolled in Medicare PECOS, maintains a secondary practice location in Denver, and is a graduate of Other (2020).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 2
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. Mariana Harasawa 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.
Medicare Billing Reassignment
Medicare enrollment records show Mariana Harasawa reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Denver, CO 80247
- Reassigned Medicare billing, Colorado enrollment
- Medicare enrollment name: Colorado Permanente Medical Group PC
- 1,715 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 80206 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 9
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Mariana Harasawa's NPI number?
The NPI number for Mariana Harasawa is 1154785863. It was assigned to this individual provider in the NPPES registry on April 8, 2016.
Where is Mariana Harasawa located?
Mariana Harasawa practices at 55 Madison St Ste 355, Denver, CO 80206. The listed phone number is (303) 377-2020.
What is Mariana Harasawa's specialty?
The primary specialty registered for this NPI is Ophthalmology, specializing in Retina Specialist, with taxonomy code 207WX0107X.
Is Mariana Harasawa enrolled in Medicare?
Yes. Mariana Harasawa 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 Mariana Harasawa's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mariana Harasawa reassigns Medicare benefits to Colorado Permanente Medical Group, P.C. (Denver, CO). 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 Mariana Harasawa's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Mariana Harasawa was last updated on April 26, 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.
# Dr. Mariana Harasawa, MD · NPI 1154785863
Retina Specialist physician in Denver, Colorado. Individual provider, active in the CMS NPPES registry since April 8, 2016.
## Identity
- **NPI:** 1154785863 (Entity type: Individual)
- **Enumerated:** April 8, 2016
- **Primary specialty:** Ophthalmology - Retina Specialist · taxonomy 207WX0107X
- **State license:** DR.0065005 (Colorado)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 55 MADISON ST STE 355, Denver, CO 80206-5429
- **Phone:** (303) 377-2020
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Colorado Permanente Medical Group, P.C. (NPI 1760599724, Denver, CO), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2020
## Record status
- **NPPES last updated:** April 26, 2023
- **Other identifiers:** Other 029387 (CO); Medicaid 9000164548 (CO)
---
Source: [NPI Profile](https://npiprofile.com/npi/1154785863) · Data from the CMS NPPES public registry.