ALANNA TIEMAN
NPI 1255835500
Internal Medicine in New York, NY
About Alanna Tieman NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALANNA TIEMAN (NPI 1255835500) is an individual internal medicine provider in New York, New York, licensed in New York (308537) and active in the NPI registry since March 2018. She is enrolled in Medicare PECOS, maintains a secondary practice location in New York, and is a graduate of Albert Einstein College Of Medicine Of Yeshiva University (2018).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Accepted Insurance
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
Alanna Tieman 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 Reassignments
3Medicare enrollment records show Alanna Tieman reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New York, NY 10017
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: One Medical Of Ny PC
- 139 clinicians in this Medicare group
New York, NY 10025
- Reassigned Medicare billing, New York enrollment
- 5,251 clinicians in this Medicare group
Saint Louis, MO 63128
- Reassigned Medicare billing, Missouri enrollment
- 228 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.
Areas of Expertise CMS Part B claims 2
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10010 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 6
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 Alanna Tieman's NPI number?
The NPI number for Alanna Tieman is 1255835500. It was assigned to this individual provider in the NPPES registry on March 21, 2018.
Where is Alanna Tieman located?
Alanna Tieman practices at 35 E 21st St Fl 7, New York, NY 10010. The listed phone number is (888) 663-6331.
What is Alanna Tieman's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Alanna Tieman enrolled in Medicare?
Yes. Alanna Tieman 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 organizations bill Medicare for Alanna Tieman's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alanna Tieman reassigns Medicare benefits to 3 organizations: One Medical Of Ny, P.C. (New York, NY), Montefiore Medical Center (New York, NY) and Mercy Clinic East Communities (Saint Louis, MO). Each 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 Alanna Tieman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Alanna Tieman accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan and Ambetter of Oklahoma and 3 other insurers list Alanna Tieman 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.
When was this NPI record last updated?
The NPPES record for Alanna Tieman was last updated on March 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 months 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.
# Alanna Tieman · NPI 1255835500
Internal Medicine physician in New York, New York. Individual provider, active in the CMS NPPES registry since March 21, 2018.
## Identity
- **NPI:** 1255835500 (Entity type: Individual)
- **Enumerated:** March 21, 2018
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 308537 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 35 E 21ST ST FL 7, New York, NY 10010-6212
- **Phone:** (888) 663-6331 · **Fax:** (415) 252-7176
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): One Medical Of Ny, P.C. (NPI 1861709487, New York, NY); Montefiore Medical Center (NPI 1760288278, New York, NY); Mercy Clinic East Communities (NPI 1720635329, Saint Louis, MO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Albert Einstein College Of Medicine Of Yeshiva University, class of 2018
## Record status
- **NPPES last updated:** March 19, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1255835500) · Data from the CMS NPPES public registry.