Active NPI 1679642938 Individual Practitioner Female Practitioner

Dr. Margaret M Andersen , MD

Internal Medicine • Valhalla, NY

✓ Accepts Medicare Assignment Telehealth Available

Professional Overview & Biography Verified Profile Summary

Dr. Margaret Andersen, MD is a certified Internal Medicine practicing in Valhalla, NY. With approximately 32 years of clinical experience since graduating from State University Of New York At Stony Brook, School Of Medicine in 1994, Dr. Andersen delivers high-quality medical care to the local community at 465 COLUMBUS AVE STE 370.

Dr. Andersen is affiliated with North Shore-Lij Medical Pc and accepts Medicare assignment . Telehealth and virtual consultation options are available for eligible patients.

Frequently performed procedures and clinical services include visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's, insertion of needle into vein for collection of blood sample, established patient outpatient office visit. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

465 Columbus Ave Ste 370

Valhalla, NY 105951336

Telephone 9147691600

Fax 9147691610

Associated Practice Facility / Clinic

🏢 Westchester Health Medical P.c. Facility NPI 1538606363

Medicare Profile & Education

Medical School

State University Of New York At Stony Brook, School Of Medicine

Graduation Year

1994

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

Telehealth Services Available

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Valhalla, NY

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

32 Yrs +12.4 yrs vs City Avg

City Avg: 19.6 Yrs

State Avg: 29.4 Yrs

Regional Practice Density

71 Specialists

Practicing in Valhalla, NY (12979 Statewide)

Telehealth Adoption Rate

18.3% Regional Adoption

✓ Offers Virtual Consultations

Medicare Pricing Discount

73.6% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Andersen (32 Years) 32 Yrs

Valhalla Specialty Average (19.6 Years) 19.6 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
G2211 Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's	75	60	$84.00	$18.50
36415 Insertion of needle into vein for collection of blood sample	66	60	$38.63	$8.65
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	55	44	$689.00	$136.94
99213 Established patient office or other outpatient visit, typically 15 minutes	48	43	$494.00	$94.89
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	34	34	$566.00	$150.37
G0009 Administration of pneumococcal vaccine	16	16	$107.00	$37.09
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use	16	16	$795.00	$284.61

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
36415 Insertion of needle into vein for collection of blood sample	180	109	$14.39	$8.40
99213 Established patient office or other outpatient visit, typically 15 minutes	132	98	$494.00	$105.44
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	97	68	$689.00	$149.48
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	77	77	$566.00	$150.20
93000 Routine ekg using at least 12 leads including interpretation and report	38	36	$139.00	$17.32
G0008 Administration of influenza virus vaccine	38	38	$107.00	$35.98
90662 Influenza vaccine split virus, preservative free	37	37	$109.00	$71.84
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use	24	24	$795.00	$282.08
G0009 Administration of pneumococcal vaccine	23	23	$107.00	$35.98
71046 X-ray of chest, 2 views	12	11	$196.00	$40.70
G0438 Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit	12	12	$843.00	$192.27
0241U Respiratory infectious agent detection by rna for severe acute respiratory syndrome coronavirus 2 (covid 19), influenza a, influenza b, and respiratory syncytial virus, upper respiratory specimen, each reported as detected or not detected	12	12	$642.00	$139.78
G0402 Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment	11	11	$486.00	$192.68

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
36415 Insertion of needle into vein for collection of blood sample	201	125	$14.00	$2.96
99213 Established patient office or other outpatient visit, typically 15 minutes	133	98	$448.93	$108.58
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	105	81	$583.02	$152.96
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	82	82	$566.00	$155.71
93000 Routine ekg using at least 12 leads including interpretation and report	49	49	$139.00	$17.71
G0008 Administration of influenza virus vaccine	48	48	$107.00	$35.34
90662 Influenza vaccine split virus, preservative free	45	45	$109.00	$68.39
G0009 Administration of pneumococcal vaccine	12	12	$107.00	$35.59
87637 Detection test by multiplex amplified probe technique for severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (covid-19), influenza virus types a and b, and respiratory syncytial virus	12	12	$642.00	$140.61

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
36415 Insertion of needle into vein for collection of blood sample	249	154	$14.00	$3.00
99213 Established patient office or other outpatient visit, typically 15 minutes	161	109	$383.00	$111.20
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	151	109	$475.00	$157.36
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	111	111	$566.00	$160.51
93000 Routine ekg using at least 12 leads including interpretation and report	76	74	$139.00	$18.51
G0008 Administration of influenza virus vaccine	55	55	$107.00	$20.37
90662 Influenza vaccine split virus, preservative free	52	52	$109.00	$65.26
G0009 Administration of pneumococcal vaccine	19	19	$107.00	$20.35
G0438 Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit	16	16	$843.00	$201.43
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	14	14	$248.00	$125.49

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
36415 Insertion of needle into vein for collection of blood sample	241	144	$14.00	$2.99
99213 Established patient office or other outpatient visit, typically 15 minutes	217	130	$383.00	$90.53
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	98	98	$566.00	$138.48
G0008 Administration of influenza virus vaccine	76	67	$107.00	$19.70
93000 Routine ekg using at least 12 leads including interpretation and report	69	67	$139.00	$21.02
90662 Influenza vaccine split virus, preservative free	68	60	$109.00	$60.17
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	67	50	$475.00	$128.85
G0009 Administration of pneumococcal vaccine	28	28	$107.00	$19.69
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	24	24	$248.00	$119.25
G0438 Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit	14	14	$843.00	$202.31

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	282	143	$383.00	$87.29
36415 Insertion of needle into vein for collection of blood sample	275	143	$14.00	$2.94
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	95	95	$566.00	$136.68
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	94	67	$475.00	$127.22
93000 Routine ekg using at least 12 leads including interpretation and report	71	68	$139.00	$20.49
G0008 Administration of influenza virus vaccine	45	45	$107.00	$19.35
90662 Influenza vaccine split virus, preservative free	38	38	$109.00	$54.82
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	27	12	$115.00	$19.72
J3420 Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg	25	12	$8.00	$1.79
G0009 Administration of pneumococcal vaccine	15	15	$107.00	$19.35
71046 X-ray of chest, 2 views	15	13	$196.00	$37.97

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	332	163	$383.00	$84.64
36415 Insertion of needle into vein for collection of blood sample	296	166	$14.00	$2.93
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	95	95	$566.00	$135.37
93000 Routine ekg using at least 12 leads including interpretation and report	86	83	$139.00	$20.26
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	68	56	$475.00	$122.99
G0008 Administration of influenza virus vaccine	59	58	$107.00	$24.01
90662 Influenza vaccine split virus, preservative free	57	56	$109.00	$51.93
G0009 Administration of pneumococcal vaccine	34	34	$107.00	$24.01
G0438 Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit	22	22	$843.00	$189.29
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	17	17	$248.00	$105.59
90670 Pneumococcal vaccine for injection into muscle	17	17	$520.00	$198.85
81003 Automated urinalysis test	16	16	$15.00	$2.71
71046 X-ray of chest, 2 views	14	13	$196.00	$36.18
G0402 Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment	12	12	$486.00	$191.59

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	347	151	$354.08	$84.79
36415 Insertion of needle into vein for collection of blood sample	276	151	$16.17	$2.94
93000 Routine ekg using at least 12 leads including interpretation and report	82	79	$134.06	$20.22
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	72	72	$517.97	$134.07
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	63	49	$428.57	$122.62
G0008 Administration of influenza virus vaccine	58	58	$103.59	$29.93
G0009 Administration of pneumococcal vaccine	45	45	$92.33	$29.93
90662 Influenza vaccine split virus, preservative free	44	44	$109.00	$48.05
80053 Blood test, comprehensive group of blood chemicals	38	37	$61.00	$12.16
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count	31	30	$36.00	$10.45
80061 Blood test, lipids (cholesterol and triglycerides)	30	29	$61.00	$12.13
90670 Pneumococcal vaccine for injection into muscle	29	29	$457.24	$185.66
G0438 Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit	23	23	$807.96	$196.68
81003 Automated urinalysis test	22	21	$25.82	$3.02
84443 Blood test, thyroid stimulating hormone (TSH)	21	21	$112.00	$22.59
71020 X-ray of chest, 2 views, front and side	17	17	$178.59	$33.15
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	16	16	$225.88	$95.23
90688 Vaccine for influenza for administration into muscle, 0.5 ml dosage	14	14	$51.57	$17.48

Medical Specialties & State Licenses

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License NY 202880

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

Medicaid State Provider ID

01749233 (NY)

Hospital & Practice Group Affiliations

North Shore-Lij Medical Pc

330 Community Dr, Manhasset, NY 110303816

Phone: 5167082550

North Shore-Lij Medical Pc

300 Community Dr, Manhasset, NY 110303816

North Shore-Lij Medical Pc

350 Community Dr, Manhasset, NY 110303816

Phone: 5165623845

North Shore-Lij Medical Pc

400 E Main St, Mount Kisco, NY 105493417

Phone: 9146661371

North Shore-Lij Medical Pc

300 Community Dr Ll, Manhasset, NY 110303816

Phone: 5165622229

North Shore-Lij Medical Pc

972 Brush Hollow Rd, Westbury, NY 115901740

Phone: 5168764100

North Shore-Lij Medical Pc

972 Brush Hollow Rd, Westbury, NY 115901740

Phone: 5168764100

Practice Associates & Co-Workers

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

7 Associated Practitioners

Deborah Kelly , FNP

Nurse Practitioner - Family

NPI 1205025814

Family Nurse Practitioner

Dr. Michele Caravella , MD

Family Medicine

NPI 1225533573

Doctor of Medicine (M.D.)

Dr. Tatsiana Bulchynskaya , MD

Internal Medicine

NPI 1336899343

Doctor of Medicine (M.D.)

Dr. Lauren Maltese , MD

Internal Medicine

NPI 1528401940

Doctor of Medicine (M.D.)

Dr. Nancy Beran , MD

Internal Medicine

NPI 1609959121

Doctor of Medicine (M.D.)

Dr. Meghan Auten , MD

Family Medicine

NPI 1962896464

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 October 27, 2016

NPI status registered as active in NPPES database

📍

Updated Practice Location October 27, 2016

Registered at 465 COLUMBUS AVE STE 370, VALHALLA, NY 105951336 (Tel: 9147691600)

📍

Updated Business Mailing Address October 27, 2016

Registered at 465 COLUMBUS AVE STE 370, VALHALLA, NY 105951336 (Tel: 9147691600)

👤

Provider Name / Credentials Updated October 27, 2016

Recorded as MARGARET ANDERSEN, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) October 27, 2016

Internal Medicine (License #202880 in NY)

🟢

Initial NPI Registration & Enumeration November 08, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

0 Reviews

No patient reviews submitted yet for Dr. Margaret Andersen. Be the first to share your experience!

Only verified registered users can submit ratings, post feedback, and upload facility photos.

NPI Administrative Meta

NPI Number: 1679642938

Entity Type:

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

Enumeration Date: November 08, 2006

Last Update: October 27, 2016

Sole Proprietor: No

Update or Correct Profile

Mailing Address

465 Columbus Ave Ste 370

Valhalla, NY 105951336

Phone: 9147691600

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.