ALEXANDER SCOTT LEIDNER M.D.
NPI 1174918957
Internal Medicine - Nephrology in Chicago, IL

Q: What is Alexander Leidner's NPI number?

The NPI number for Alexander Leidner is 1174918957. It was assigned to this individual provider in the NPPES registry on March 30, 2015.

Q: What is Alexander Leidner'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 Alexander Leidner was last updated on July 12, 2021. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since March 30, 2015PECOS EnrolledAccepts Medicare Assignment

94.1/100

CMS Quality Rating

675 N SAINT CLAIR ST STE 18-250, CHICAGO, IL 60611(312) 695-0596(312) 926-4878 Get Directions Write a Review

NPPES record last updated: July 12, 2021. Verified against the NPPES registry weekly; last sync: July 19, 2026.

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About Alexander Scott Leidner M.d. NPPES

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

ALEXANDER SCOTT LEIDNER M.D. (NPI 1174918957) is an individual nephrology provider in Chicago, Illinois, licensed in Illinois (036146665) and active in the NPI registry since March 2015. He is enrolled in Medicare PECOS, is affiliated with Northwestern Medicine Central Dupage Hospital, and maintains a secondary practice location in Chicago.

NPPES Registry Identity

NPI1174918957

Entity TypeIndividualMale

Primary Taxonomy207RN0300X

Provider Legal NameALEXANDER SCOTT LEIDNERCredential: M.D.

Location Address675 N SAINT CLAIR ST STE 18-250Chicago, IL 60611-5980

Mailing Address675 N Saint Clair St Ste 18-250Chicago, IL 60611-5980 · (312) 695-0596 · Fax (312) 926-4878

Phone(312) 695-0596

Fax(312) 926-4878

Sole ProprietorYes

Medical School CMSUniversity Of Texas Southwestern Medical School At DallasGraduated 2015

Enumeration DateMarch 30, 2015

Last NPPES UpdateJuly 12, 2021

NPPES CertifiedJuly 12, 2021

✔ NPI 1174918957 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 IL · 036146665

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 125 067013 (ID)

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

675 N SAINT CLAIR ST STE 18-250, Chicago, IL 60611

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Secondary Practice Location 1

Location 1240 E Huron St, St #1-200Chicago, IL 60611-2909 · Phone (210) 426-7736

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

Alexander Scott Leidner 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 ID6305136185

PECOS Enrollment IDI20210629002084

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 8

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 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.

458 services156 patients

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.

90 services54 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.

89 services62 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.

68 services18 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.

63 services61 patients

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.

43 services43 patients

Hospital Affiliations CMS Care Compare 2

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

Northwestern Medicine Central Dupage Hospital

Acute Care Hospitals · Winfield, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140242

Location25 North Winfield RoadWinfield, IL 60190 · Du Page County

Emergency services Birthing friendly

Northwestern Memorial Hospital

Acute Care Hospitals · Chicago, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140281

Location251 E Huron StChicago, IL 60611 · Cook County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60611 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

$138.86 typical visit price

range $60.08 – $183.39

Typical copayment $34.71 (range $15.02 – $45.84)

Most-billed visit code 99204

Established Patient

$105.70 typical visit price

range $18.97 – $148.12

Typical copayment $26.42 (range $4.74 – $37.03)

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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

94.1/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored through an Alternative Payment Model

Quality

82.59

Promoting Interoperability

100

Improvement Activities

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.

LAUREN M LEIGHTON PA-C

Physician Assistant