DR. LENAR TATIOS YESSAYAN M.D.
NPI 1023210861
Internal Medicine - Nephrology in Ann Arbor, MI

Q: What is Lenar Yessayan's NPI number?

The NPI number for Lenar Yessayan is 1023210861. It was assigned to this individual provider in the NPPES registry on June 4, 2007.

Q: What is Lenar Yessayan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Q: When was this NPI record last updated?

The NPPES record for Lenar Yessayan was last updated on January 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.

Active since June 04, 2007PECOS EnrolledAccepts Medicare Assignment

2850 SOUTH INDUSTRIAL HWY, ANN ARBOR, MI 48104(734) 677-1490 Get Directions Write a Review

NPPES record last updated: January 14, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Dr. Lenar Tatios Yessayan M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. LENAR TATIOS YESSAYAN M.D. (NPI 1023210861) is an individual nephrology provider in Ann Arbor, Michigan, licensed in Michigan (4301082653) and active in the NPI registry since June 2007. He is enrolled in Medicare PECOS, is affiliated with University Of Michigan Health System, and is a graduate of Other (2001).

NPPES Registry Identity

NPI1023210861

Entity TypeIndividualMale

Primary Taxonomy207RN0300X

Provider Legal NameDR. LENAR TATIOS YESSAYANCredential: M.D.

Location Address2850 SOUTH INDUSTRIAL HWYAnn Arbor, MI 48104-6796

Mailing Address3621 S State StAnn Arbor, MI 48108-1633 · (734) 647-5299

Phone(734) 677-1490

Sole ProprietorNo

Medical School CMSOtherGraduated 2001

Enumeration DateJune 4, 2007

Last NPPES UpdateJanuary 14, 2026

NPPES CertifiedJanuary 14, 2026

✔ NPI 1023210861 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians

Taxonomy Code207RN0300X

License✔ Licensed in MI · 4301082653

Definition

An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.

Also ListedInternal MedicineTaxonomy 207R00000X · License 4301082653 (MI)

Also ListedInternal Medicine · Critical Care MedicineTaxonomy 207RC0200X · License 4301082653 (MI)

2850 SOUTH INDUSTRIAL HWY, Ann Arbor, MI 48104

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company, Priority Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Lenar Tatios Yessayan M.d. 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.

PECOS PAC ID3779638747

PECOS Enrollment IDI20090827000624

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 4

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

113 services40 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

91 services36 patients

Dialysis services, 4 or more physician visits per month (20 years or older) 90960

Dialysis is a treatment that filters and purifies your blood using a machine. It helps keep your fluids and electrolytes in balance when the kidneys can't do their job. This service includes 4 or more visits per month with a physician to monitor your health and adjust your treatment as needed.

67 services12 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

15 services14 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

University Of Michigan Health System

Acute Care Hospitals · Ann Arbor, MI

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number230046

Location1500 E Medical Center Drive, Spc 5474Ann Arbor, MI 48109 · Washtenaw County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 48104 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$134.28 typical visit price

range $58.04 – $177.36

Typical copayment $33.57 (range $14.51 – $44.34)

Most-billed visit code 99204

Established Patient

$102.35 typical visit price

range $18.32 – $143.49

Typical copayment $25.58 (range $4.58 – $35.87)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MELISSA JUGO TINNEY M.D.

Physical Medicine & Rehabilitation

2850 SOUTH INDUSTRIAL HWY, SUITE 400
ANN ARBOR, MI 48104

Washtenaw County (734) 973-2400

JAMES A LEONARD JR. MD

Physical Medicine & Rehabilitation

2850 SOUTH INDUSTRIAL HWY, SUITE 400
ANN ARBOR, MI 48104

Washtenaw County (734) 936-7175

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 Lenar Yessayan's NPI number?

The NPI number for Lenar Yessayan is 1023210861. It was assigned to this individual provider in the NPPES registry on June 4, 2007.

Where is Lenar Yessayan located?

Lenar Yessayan practices at 2850 South Industrial Hwy, Ann Arbor, MI 48104. The listed phone number is (734) 677-1490.

What is Lenar Yessayan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is Lenar Yessayan enrolled in Medicare?

Yes. Lenar Yessayan 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.

What insurance does Lenar Yessayan accept?

Health plans from Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company and Priority Health list Lenar Yessayan 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.

Is Lenar Yessayan affiliated with any hospitals?

According to CMS data, Lenar Yessayan is affiliated with University Of Michigan Health System.

When was this NPI record last updated?

The NPPES record for Lenar Yessayan was last updated on January 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.