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DR. CHRISTOPHER TIMOTHY ISHAM MD
NPI 1265921753
Internal Medicine in Ferndale, MI

Active since May 09, 2018PECOS EnrolledAccepts Medicare Assignment
86.85/100
CMS Quality Rating
221 W TROY ST STE 400, FERNDALE, MI 48220(248) 844-6100(248) 844-6102 Get Directions Write a Review

NPPES record last updated: February 15, 2024. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 17, 2022, May 9, 2018 (2 updates tracked since 2018).

About Dr. Christopher Timothy Isham Md NPPES

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

DR. CHRISTOPHER TIMOTHY ISHAM MD (NPI 1265921753) is an individual internal medicine provider in Ferndale, Michigan, licensed in Michigan (4301506885) and active in the NPI registry since May 2018. He is enrolled in Medicare PECOS, is affiliated with Ascension Providence Hospital, Southfield And Novi, and is a graduate of Wayne State University School Of Medicine (2017).

NPPES Registry Identity

NPI1265921753
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. CHRISTOPHER TIMOTHY ISHAMCredential: MD
Location Address221 W TROY ST STE 400Ferndale, MI 48220-3903
Mailing Address221 W Troy St Ste 400Ferndale, MI 48220-3903 · (248) 844-6100 · Fax (248) 844-6102
Phone(248) 844-6100
Fax(248) 844-6102
Sole ProprietorYes
Medical School CMSWayne State University School Of MedicineGraduated 2017
Enumeration DateMay 9, 2018
Last NPPES UpdateFebruary 15, 20242 updates tracked since enumeration
NPPES CertifiedFebruary 15, 2024
✔ NPI 1265921753 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MI · 4301506885
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.
221 W TROY ST STE 400, Ferndale, MI 48220
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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, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Christopher Timothy Isham 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 ID2264787100
PECOS Enrollment IDI20220603002055
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.
86 services40 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.
50 services25 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.
44 services17 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.
43 services40 patients
Hospital discharge day management, 30 minutes or less 99238
Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.
27 services25 patients
Insertion of needle into vein for collection of blood sample 36415
This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
20 services11 patients

Hospital Affiliations CMS Care Compare

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

Ascension Providence Hospital, Southfield And Novi

Acute Care Hospitals · Southfield, MI
3/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number230019
Location16001 W Nine Mile RdSouthfield, MI 48075 · Oakland County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 48220 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.

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.

86.85/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality84.71
Promoting Interoperability100
Improvement Activities40
Cost65.3

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 Christopher Isham's NPI number?

The NPI number for Christopher Isham is 1265921753. It was assigned to this individual provider in the NPPES registry on May 9, 2018.

Where is Christopher Isham located?

Christopher Isham practices at 221 W Troy St Ste 400, Ferndale, MI 48220. The listed phone number is (248) 844-6100.

What is Christopher Isham's specialty?

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

Is Christopher Isham enrolled in Medicare?

Yes. Christopher Isham 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 Christopher Isham 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 and 2 other insurers list Christopher Isham 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 Christopher Isham affiliated with any hospitals?

According to CMS data, Christopher Isham is affiliated with Ascension Providence Hospital, Southfield And Novi.

When was this NPI record last updated?

The NPPES record for Christopher Isham was last updated on February 15, 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.