1. Home
  2. Directory
  3. Illinois
  4. Mchenry
  5. Internal Medicine
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

OM PARKASH
NPI 1356970347
Internal Medicine in Mchenry, IL

Active since April 02, 2020PECOS EnrolledAccepts Medicare Assignment
4201 W MEDICAL CENTER DR, MCHENRY, IL 60050(815) 338-6600 Get Directions Write a Review

NPPES record last updated: August 31, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 31, 2026, Dec 6, 2020, Jul 1, 2020 and 1 more (4 updates tracked since 2020).

About Om Parkash NPPES

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

OM PARKASH (NPI 1356970347) is an individual internal medicine provider in Mchenry, Illinois, licensed in Illinois (125.076414) and active in the NPI registry since April 2020. He is enrolled in Medicare PECOS, is affiliated with Reading Hospital, and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1356970347
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameOM PARKASH
Location Address4201 W MEDICAL CENTER DRMchenry, IL 60050-8409
Mailing Address4201 W Medical Center DrMchenry, IL 60050-8409 · (815) 338-6600
Phone(815) 338-6600
Sole ProprietorNo
Medical School CMSOtherGraduated 2015
Enumeration DateApril 2, 2020
Last NPPES UpdateAugust 31, 20264 updates tracked since enumeration
NPPES CertifiedAugust 31, 2026
✔ NPI 1356970347 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Licenses✔ Licensed in IL · 125.076414✔ Licensed in PA · MD480131
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 ListedHospitalistTaxonomy 208M00000X · License MD480131 (PA)
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
4201 W MEDICAL CENTER DR, Mchenry, IL 60050
Open in Google Maps ↗

Secondary Practice Locations 3

Location 1169 Martin AveEphrata, PA 17522-1734 · Phone (717) 721-4740 · Fax (717) 738-6872
Location 2252 S 4th StLebanon, PA 17042-6111 · Phone (717) 270-4876 · Fax (717) 270-3875
Location 33707 Doty Road, Suite E and FWoodstock, IL 60098 · Phone (815) 338-6600

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

Om Parkash 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 ID4385009380
PECOS Enrollment IDI20230426001978
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

4

Medicare enrollment records show Om Parkash reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Wellspan Medical Group
568 mi
Family Medicine
2 KEEFER DR
Mercersburg, PA 17236
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 3,080 clinicians in this Medicare group
NPI 1407568298 (717) 328-2119
Tower Health Medical Group
653 mi
Sports Medicine
1350 BROADCASTING RD STE 201
Wyomissing, PA 19610
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 1,473 clinicians in this Medicare group
NPI 1891036166 (610) 685-9600
Pottstown Clinic Company LLC
672 mi
Family Medicine
730 S HANOVER ST
Pottstown, PA 19465
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 474 clinicians in this Medicare group
NPI 1649341934 (610) 323-6835
Phoenixville Clinic Company LLC
678 mi
Vascular Surgery
420 W LINFIELD TRAPPE RD, STE 1100
Limerick, PA 19468
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 529 clinicians in this Medicare group
NPI 1790746345 (610) 495-2550

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 6

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.
466 services193 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.
123 services120 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.
83 services81 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.
42 services42 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.
34 services28 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
18 services18 patients

Hospital Affiliations CMS Care Compare

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

Reading Hospital

Acute Care Hospitals · West Reading, PA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number390044
Location420 S 5th AvenueWest Reading, PA 19611 · Berks County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60050 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
$127.46 typical visit price
range $54.80 – $168.44
Typical copayment $31.86 (range $13.70 – $42.11)
Most-billed visit code 99204
Established Patient
$97.25 typical visit price
range $17.16 – $136.56
Typical copayment $24.31 (range $4.29 – $34.14)
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.

AIGIN HEYDARI MD
Student in an Organized Health Care Education/Training Program
4201 W MEDICAL CENTER DR
MCHENRY, IL 60050
McHenry County (815) 344-5000
DR. KEILLA AMORIM SCHMIDT M.D.
Surgery (Surgical Critical Care)
4201 W MEDICAL CENTER DR
MCHENRY, IL 60050
McHenry County (815) 759-4530
CENTEGRA CLINICAL LABORATORIES, LLC
Clinical Medical Laboratory
4201 W MEDICAL CENTER DR
MCHENRY, IL 60050
McHenry County (815) 759-4800
DR. CORY EDWARD MELLON MD
Hospitalist
4201 W MEDICAL CENTER DR
MCHENRY, IL 60050
McHenry County (815) 759-4323
SAAD AHMAD WARAICH M.D
Internal Medicine
4201 W MEDICAL CENTER DR
MCHENRY, IL 60050
McHenry County (815) 344-5000
SNEHA KUMAR
Internal Medicine
4201 W MEDICAL CENTER DR
MCHENRY, IL 60050
McHenry County (815) 344-5000
DR. SHAWN MARTEN FALITZ M.D.
Anesthesiology
4201 W MEDICAL CENTER DR
MCHENRY, IL 60050
McHenry County (815) 344-5000
ADRIENNE B MEJIA MD MPH
Anesthesiology
4201 W MEDICAL CENTER DR
MCHENRY, IL 60050
McHenry County (815) 344-5000

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 Om Parkash's NPI number?

The NPI number for Om Parkash is 1356970347. It was assigned to this individual provider in the NPPES registry on April 2, 2020.

Where is Om Parkash located?

Om Parkash practices at 4201 W Medical Center Dr, Mchenry, IL 60050. The listed phone number is (815) 338-6600.

What is Om Parkash's specialty?

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

Is Om Parkash enrolled in Medicare?

Yes. Om Parkash 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 Om Parkash's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Om Parkash reassigns Medicare benefits to 4 organizations: Wellspan Medical Group (Mercersburg, PA), Tower Health Medical Group (Wyomissing, PA), Pottstown Clinic Company LLC (Pottstown, PA) and Phoenixville Clinic Company LLC (Limerick, PA). 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 Om Parkash's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Om Parkash affiliated with any hospitals?

According to CMS data, Om Parkash is affiliated with Reading Hospital.

When was this NPI record last updated?

The NPPES record for Om Parkash was last updated on August 31, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 52 days 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.