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DR. JOHN TIS M.D.
NPI 1649363797
Orthopaedic Surgery - Pediatric Orthopaedic Surgery in Morristown, NJ

Active since October 02, 2006PECOS Enrolled
55 MADISON AVE STE 360, MORRISTOWN, NJ 07960(973) 971-7830(973) 267-5060 Get Directions Write a Review

NPPES record last updated: November 3, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Nov 3, 2023, May 17, 2023, Mar 21, 2023 and 1 more (4 updates tracked since 2021).

About Dr. John Tis M.d. NPPES

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

DR. JOHN TIS M.D. (NPI 1649363797) is an individual pediatric orthopaedic surgery provider in Morristown, New Jersey, licensed in New Jersey (25MA11722800) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS and maintains a secondary practice location in Ridgewood.

NPPES Registry Identity

NPI1649363797
Entity TypeIndividualMale
Primary Taxonomy207XP3100X
Provider Legal NameDR. JOHN TISCredential: M.D.
Location Address55 MADISON AVE STE 360Morristown, NJ 07960-7390
Mailing AddressPo Box 416457Boston, MA 02241-6457 · (844) 362-1735 · Fax (973) 290-7495
Phone(973) 971-7830
Fax(973) 267-5060
Sole ProprietorNo
Enumeration DateOctober 2, 2006
Last NPPES UpdateNovember 3, 20234 updates tracked since enumeration
NPPES CertifiedNovember 3, 2023
✔ NPI 1649363797 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyOrthopaedic Surgery · Pediatric Orthopaedic SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207XP3100X
License✔ Licensed in NJ · 25MA11722800
Definition
An orthopedic surgeon who has additional training and experience in diagnosing, treating and managing musculoskeletal problems in infants, children and adolescents. These may include limb and spine deformities (such as club foot, scoliosis); gait abnormalities (limping); bone and joint infections; broken bones.
Also ListedOrthopaedic SurgeryTaxonomy 207X00000X · License 0101052990 (VA)
55 MADISON AVE STE 360, Morristown, NJ 07960
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Secondary Practice Location 1

Location 1140 Chestnut St Ste 201Ridgewood, NJ 07450-2536 · Phone (201) 612-9988 · Fax (201) 445-9050

Other Identifiers 1

Medicaid010321034VA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware, Oscar Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. John Tis M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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

3

Medicare enrollment records show John Tis reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Practice Associates Medical Group
0.2 mi
Internal Medicine
100 MADISON AVENUE, INTEROFFICE #68
Morristown, NJ 07960
  • Reassigned Medicare billing, New Jersey enrollment
  • 1,699 clinicians in this Medicare group
NPI 1427016385 (844) 264-2250
Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc
166 mi
Health Maintenance Organization
888 BESTGATE ROAD
Annapolis, MD 21401
NPI 1952461816 (410) 571-7300
Children's Hospital
187 mi
Pediatrics
111 MICHIGAN AVE NW
Washington, DC 20010
  • Reassigned Medicare billing, District of Columbia enrollment
  • 1,417 clinicians in this Medicare group
NPI 1780800128 (202) 476-5000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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.

MARISSA NICOLE ELLIS PA-C
Physician Assistant
55 MADISON AVE STE 360
MORRISTOWN, NJ 07960
Morris County (973) 971-7830
MATTHEW BAUER M.D.
Orthopaedic Surgery (Pediatric Orthopaedic Surgery)
55 MADISON AVE STE 360
MORRISTOWN, NJ 07960
Morris County (973) 971-7830

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 John Tis's NPI number?

The NPI number for John Tis is 1649363797. It was assigned to this individual provider in the NPPES registry on October 2, 2006.

Where is John Tis located?

John Tis practices at 55 Madison Ave Ste 360, Morristown, NJ 07960. The listed phone number is (973) 971-7830.

What is John Tis's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery, specializing in Pediatric Orthopaedic Surgery, with taxonomy code 207XP3100X.

Is John Tis enrolled in Medicare?

Yes. John Tis is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for John Tis's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John Tis reassigns Medicare benefits to 3 organizations: Practice Associates Medical Group (Morristown, NJ), Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (Annapolis, MD) and Children's Hospital (Washington, DC). 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 John Tis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does John Tis accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Oscar Health list John Tis 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.

When was this NPI record last updated?

The NPPES record for John Tis was last updated on November 3, 2023. 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.