DR. KAREN LYNN WILLIAMS M.D.
NPI 1477731271
Internal Medicine in Saint Paul, MN

Active since February 04, 2008PECOS EnrolledAccepts Medicare Assignment
640 JACKSON ST, SAINT PAUL, MN 55101(651) 254-3456 Get Directions Write a Review

NPPES record last updated: December 7, 2016. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Karen Lynn Williams M.d. NPPES

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

DR. KAREN LYNN WILLIAMS M.D. (NPI 1477731271) is an individual internal medicine provider in Saint Paul, Minnesota, licensed in Minnesota (51826) and active in the NPI registry since February 2008. She is enrolled in Medicare PECOS, is affiliated with Regions Hospital, and is a graduate of University Of Wisconsin School Of Medicine (2004).

NPPES Registry Identity

NPI1477731271
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. KAREN LYNN WILLIAMSCredential: M.D.
Location Address640 JACKSON STSaint Paul, MN 55101-2502
Mailing AddressPo Box 1309, Ms 21110qMinneapolis, MN 55440-1309 · (651) 254-9545 · Fax (651) 254-9545
Sole ProprietorNo
Medical School CMSUniversity Of Wisconsin School Of MedicineGraduated 2004
Enumeration DateFebruary 4, 2008
Last NPPES UpdateDecember 7, 2016
NPI 1477731271 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Licenses Licensed in MN · 51826 Licensed in WI · 63103-20
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.
640 JACKSON ST, Saint Paul, MN 55101

Other Names 1

Former Name (1)Karen Lynn Stark

Accepted 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. Karen Lynn Williams 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 ID8325194327
PECOS Enrollment IDI20090916000353
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 3

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.
161 services55 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
34 services34 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
16 services16 patients

Hospital Affiliations CMS Care Compare

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

Regions Hospital

Acute Care Hospitals · Saint Paul, MN
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number240106
Location640 Jackson StreetSaint Paul, MN 55101 · Ramsey County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 55101 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
$127.61 typical visit price
range $56.00 – $168.28
Typical copayment $31.90 (range $14.00 – $42.07)
Most-billed visit code 99204
Established Patient
$98.61 typical visit price
range $18.32 – $138.04
Typical copayment $24.65 (range $4.58 – $34.51)
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 20

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

Internal Medicine
640 JACKSON ST
SAINT PAUL, MN 55101
Internal Medicine
640 JACKSON ST
SAINT PAUL, MN 55101
Nurse Anesthetist, Certified Registered
640 JACKSON ST
SAINT PAUL, MN 55101
Internal Medicine
640 JACKSON ST
SAINT PAUL, MN 55101
Nurse Anesthetist, Certified Registered
640 JACKSON ST
SAINT PAUL, MN 55101
Orthopaedic Surgery
640 JACKSON ST
SAINT PAUL, MN 55101
Nurse Anesthetist, Certified Registered
640 JACKSON ST, MAIL STOP 11503P
ST PAUL, MN 55101
Pathology (Anatomic Pathology & Clinical Pathology)
640 JACKSON ST, MC 11103E
ST PAUL, MN 55101

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 Karen Williams's NPI number?

The NPI number for Karen Williams is 1477731271. It was assigned to this individual provider in the NPPES registry on February 4, 2008. The provider is also known as Karen Lynn Stark.

Where is Karen Williams located?

Karen Williams practices at 640 Jackson St, Saint Paul, MN 55101. The listed phone number is (651) 254-3456.

What is Karen Williams's specialty?

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

Is Karen Williams enrolled in Medicare?

Yes. Karen Williams 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 Karen Williams accept?

Health plans from Medica list Karen Williams 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 Karen Williams affiliated with any hospitals?

According to CMS data, Karen Williams is affiliated with Regions Hospital.

When was this NPI record last updated?

The NPPES record for Karen Williams was last updated on December 7, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.