Active NPI 1194866087 Individual Practitioner Male Practitioner

Dr. Mark Allen Schaeffer , MD

Internal Medicine • Princeton, NJ

Professional Overview & Biography Verified Profile Summary

Dr. Mark Schaeffer, MD is a registered healthcare professional specializing in Internal Medicine in Princeton, NJ. Practice services are available at 800 BUNN DR under active NPI credentials.

Frequently performed procedures and clinical services include insertion of needle into vein for collection of blood sample, established patient outpatient office visit, routine ekg using at least 12 leads including interpretation and report. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

800 Bunn Dr
Suite 302

Princeton, NJ 085401968

Telephone 6099211680

Fax 6099211438

Associated Practice Facility / Clinic

🏢 The Princeton Center For Dermatology, Llc Facility NPI 1275575094

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Princeton, NJ

Active Practitioner

Practitioner Clinical Experience

Active

City Avg: 29.5 Yrs

State Avg: 30.1 Yrs

Regional Practice Density

67 Specialists

Practicing in Princeton, NJ (4957 Statewide)

Telehealth Adoption Rate

37.3% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

24.3% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2019)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
36415 Insertion of needle into vein for collection of blood sample	329	192	$25.00	$2.94
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	181	110	$80.00	$48.77
93000 Routine ekg using at least 12 leads including interpretation and report	157	151	$21.00	$18.45
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	135	135	$143.26	$124.20
99213 Established patient office or other outpatient visit, typically 15 minutes	62	53	$84.79	$79.62
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	50	41	$195.00	$116.28
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	19	19	$156.49	$154.14
G0008 Administration of influenza virus vaccine	14	14	$35.00	$17.98
90662 Influenza vaccine split virus, preservative free	14	14	$45.00	$44.10
G0009 Administration of pneumococcal vaccine	13	13	$40.00	$17.98

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
36415 Insertion of needle into vein for collection of blood sample	489	217	$25.00	$2.94
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	263	147	$73.75	$49.57
93000 Routine ekg using at least 12 leads including interpretation and report	213	196	$21.55	$19.23
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	177	177	$143.26	$133.54
G0008 Administration of influenza virus vaccine	122	114	$35.00	$22.32
90662 Influenza vaccine split virus, preservative free	119	112	$45.00	$44.10
99213 Established patient office or other outpatient visit, typically 15 minutes	102	67	$83.83	$81.82
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	85	65	$195.00	$120.57
G0009 Administration of pneumococcal vaccine	29	29	$40.00	$22.32
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	28	11	$24.19	$22.91
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	25	20	$173.71	$162.12
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	19	19	$150.00	$105.59
G0402 Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment	12	12	$204.11	$189.31
G0438 Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit	12	12	$209.02	$191.75

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
36415 Insertion of needle into vein for collection of blood sample	456	208	$24.80	$2.94
93000 Routine ekg using at least 12 leads including interpretation and report	205	187	$20.68	$20.18
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	203	128	$48.70	$52.15
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	176	176	$141.85	$143.23
99213 Established patient office or other outpatient visit, typically 15 minutes	123	83	$81.57	$86.86
G0008 Administration of influenza virus vaccine	118	117	$35.00	$27.83
90662 Influenza vaccine split virus, preservative free	118	117	$45.00	$44.08
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	61	49	$184.70	$127.84
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	35	22	$25.32	$24.46
G0009 Administration of pneumococcal vaccine	28	28	$40.00	$27.83
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	18	16	$156.49	$171.99
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	16	16	$128.44	$83.50
G0402 Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment	15	15	$177.90	$201.31

Medical Specialties & State Licenses

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License NJ 25MA04680500

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.

Additional State Medicaid & Healthcare Payer Identifiers

Commercial Insurance / Payer ID Tax Id # Princeton Premier Medicine, Llc

271656004 (NJ)

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

2 Associated Practitioners

Rachel Cuomo , RD

Dietitian, Registered

NPI 1053692145

Registered Dietitian

Dr. Erinn Beagin , MD

Internal Medicine

NPI 1619924388

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

6 Historical Events

✅

NPI Profile Active March 11, 2012

NPI status registered as active in NPPES database

📍

Updated Practice Location March 11, 2012

Registered at 800 BUNN DR, SUITE 302, PRINCETON, NJ 085401968 (Tel: 6099211680)

📍

Updated Business Mailing Address March 11, 2012

Registered at 800 BUNN DR, SUITE 302, PRINCETON, NJ 085401968 (Tel: 6099211680)

👤

Provider Name / Credentials Updated March 11, 2012

Recorded as MARK SCHAEFFER, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) March 11, 2012

Internal Medicine (License #25MA04680500 in NJ)

🟢

Initial NPI Registration & Enumeration February 12, 2007

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1194866087

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: February 12, 2007

Last Update: March 11, 2012

Sole Proprietor: No

Update or Correct Profile

Mailing Address

800 Bunn Dr, Suite 302

Princeton, NJ 085401968

Phone: 6099211680

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.