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KARTHIK S RAMASESHAN MD
NPI 1023633559
Internal Medicine in Detroit, MI

Active since June 10, 2020PECOS EnrolledAccepts Medicare Assignment
4646 JOHN R ST RM B3249, DETROIT, MI 48201(248) 508-1865(864) 602-6559 Get Directions Write a Review

NPPES record last updated: August 19, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 19, 2024, Jun 14, 2024, Jun 30, 2021 and 1 more (4 updates tracked since 2020).

About Karthik S Ramaseshan Md NPPES

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

KARTHIK S RAMASESHAN MD (NPI 1023633559) is an individual internal medicine provider in Detroit, Michigan, licensed in Michigan (4301509847) and active in the NPI registry since June 2020. He is enrolled in Medicare PECOS, is affiliated with Beaumont Hospital Royal Oak, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1023633559
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameKARTHIK S RAMASESHANCredential: MD
Location Address4646 JOHN R ST RM B3249Detroit, MI 48201-1916
Mailing Address32518 New York StSaint Clair Shores, MI 48082-2078 · (248) 508-1865 · Fax (864) 602-6559
Phone(248) 508-1865
Fax(864) 602-6559
Sole ProprietorNo
Medical School CMSOtherGraduated 2020
Enumeration DateJune 10, 2020
Last NPPES UpdateAugust 19, 20244 updates tracked since enumeration
NPPES CertifiedAugust 19, 2024
✔ NPI 1023633559 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MI · 4301509847
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedGeneral PracticeTaxonomy 208D00000X · License 4301509847 (MI)
4646 JOHN R ST RM B3249, Detroit, MI 48201
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Secondary Practice Locations 2

Location 14201 Saint Antoine St Ste 2EDetroit, MI 48201-2153 · Phone (313) 745-0203 ext. 19705 · Fax (864) 602-6559
Location 232518 New York StSaint Clair Shores, MI 48082 · Phone (248) 508-1054 · Fax (864) 602-6559

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health and more.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

Karthik S Ramaseshan 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.

PECOS PAC ID1456776525
PECOS Enrollment IDI20240113000326
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.

Medicare Billing Reassignments

8

Medicare enrollment records show Karthik Ramaseshan reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Hoover Urgent Care Of Warren PLLC
3.3 mi
Urgent Care
26000 HOOVER RD
Warren, MI 48089
  • Reassigned Medicare billing, Michigan enrollment
  • 60 clinicians in this Medicare group
NPI 1821351610 (586) 872-2288
Roseville Urgent Care, PC
7.3 mi
Urgent Care
20769 E 13 MILE RD
Roseville, MI 48066
  • Reassigned Medicare billing, Michigan enrollment
  • 31 clinicians in this Medicare group
NPI 1811297070 (586) 872-2288
Get Well Urgent Care Madison Heights Plc
7.3 mi
Urgent Care
350 E 12 MILE RD
Madison Heights, MI 48071
  • Reassigned Medicare billing, Michigan enrollment
  • 16 clinicians in this Medicare group
NPI 1295240307 (586) 722-0707
Get Well Urgent Care Sterling Heights Plc
9.9 mi
Urgent Care
2567 METROPOLITAN PKWY
Sterling Heights, MI 48310
  • Reassigned Medicare billing, Michigan enrollment
  • 17 clinicians in this Medicare group
NPI 1891381232 (586) 754-0000
Southfield City Urgent Care PC
12 mi
Urgent Care
23832 SOUTHFIELD RD
Southfield, MI 48075
  • Reassigned Medicare billing, Michigan enrollment
  • 41 clinicians in this Medicare group
NPI 1811278716 (248) 569-2600
Get Well Urgent Care Macomb Plc
12 mi
Urgent Care
15945 19 MILE RD STE 102
Clinton Twp, MI 48038
  • Reassigned Medicare billing, Michigan enrollment
  • 23 clinicians in this Medicare group
NPI 1073289013 (586) 413-9100
Fadi Salloum MD PC
21 mi
Internal Medicine
50 N PERRY ST
Pontiac, MI 48342
  • Reassigned Medicare billing, Michigan enrollment
  • 68 clinicians in this Medicare group
NPI 1053510446 (248) 338-5516
Michigan Internal Medicine Associates,p.C.
22 mi
Internal Medicine
1012 W HURON ST
Waterford, MI 48328
  • Reassigned Medicare billing, Michigan enrollment
  • 10 clinicians in this Medicare group
NPI 1902818230 (248) 681-1880

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.

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
17 services17 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
14 services13 patients

Hospital Affiliations CMS Care Compare 3

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

Beaumont Hospital Royal Oak

Acute Care Hospitals · Royal Oak, MI
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number230130
Location3601 W Thirteen Mile RdRoyal Oak, MI 48073 · Oakland County
Emergency services Birthing friendly

Mclaren Oakland

Acute Care Hospitals · Pontiac, MI
1/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number230207
Location50 N Perry StPontiac, MI 48342 · Oakland County
Emergency services

Mclaren Macomb

Acute Care Hospitals · Mount Clemens, MI
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number230227
Location1000 Harrington StMount Clemens, MI 48043 · Macomb County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 48201 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.

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 Karthik Ramaseshan's NPI number?

The NPI number for Karthik Ramaseshan is 1023633559. It was assigned to this individual provider in the NPPES registry on June 10, 2020.

Where is Karthik Ramaseshan located?

Karthik Ramaseshan practices at 4646 John R St Rm B3249, Detroit, MI 48201. The listed phone number is (248) 508-1865.

What is Karthik Ramaseshan's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Karthik Ramaseshan enrolled in Medicare?

Yes. Karthik Ramaseshan 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 Karthik Ramaseshan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Karthik Ramaseshan reassigns Medicare benefits to 8 organizations: Hoover Urgent Care Of Warren PLLC (Warren, MI), Roseville Urgent Care, PC (Roseville, MI), Get Well Urgent Care Madison Heights Plc (Madison Heights, MI), Get Well Urgent Care Sterling Heights Plc (Sterling Heights, MI), Southfield City Urgent Care PC (Southfield, MI) and 3 more organizations, listed in the Medicare section above. 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 Karthik Ramaseshan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Karthik Ramaseshan accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Blue Care Network of Michigan and Blue Cross Blue Shield of Michigan Mutual Insurance Company list Karthik Ramaseshan 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 Karthik Ramaseshan affiliated with any hospitals?

According to CMS data, Karthik Ramaseshan is affiliated with Beaumont Hospital Royal Oak, Mclaren Oakland and Mclaren Macomb.

When was this NPI record last updated?

The NPPES record for Karthik Ramaseshan was last updated on August 19, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.