Dr. David Siegenberg , MD
Internal Medicine • Reading, MA
30 Newcrossing Rd, Suite # 310
Reading, MA 018673271
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. David Siegenberg is listed in NPPES under Internal Medicine.
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NPI assigned on June 5, 2006; this date does not establish years in practice.
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Published CMS data list 1,266 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99214 — Established patient outpatient office visit: 419 service units.
- 99213 — Established patient outpatient office visit: 204 service units.
- G0439 — Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit: 113 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 17 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 1,422 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Omeprazole — 228 prescription fills, including refills.
- Famotidine — 150 prescription fills, including refills.
- Lisinopril — 92 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 42 records in the table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 75% of clinicians listed under Internal Medicine in Massachusetts (2024, 3,773 clinicians with data). Median for this group: 526. Middle half: 199 to 1,077.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 1,177 in 2020 to 1,266 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
30 Newcrossing Rd
Suite # 310
Reading, MA 018673271
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: David Siegenberg Md Pc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026
1986
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
613 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $175,209 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Paid by Medicare
About $138,878 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
30-day fills
3,451 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$123,815 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $967.92 across 52 records.
By nature of payment
- Food and Beverage: $948.20 across 50 records.
- Education: $19.72 across 2 records.
Reporting-company totals (3 largest of 16)
- Janssen Pharmaceuticals, Inc: $165.07 across 7 records.
- Takeda Pharmaceuticals U.S.A., Inc.: $152.25 across 8 records.
- Madrigal Pharmaceuticals: $141.62 across 7 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
40 years (graduated 1986)
CMS Doctors and Clinicians data list 1986 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.
NPI first issued
2006
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians, CMS release of October 2, 2026; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians, CMS release of October 2, 2026.
Enrolled in Medicare (PECOS)
Dr. Siegenberg has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Siegenberg as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Reading and Massachusetts
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 75% of clinicians listed under Internal Medicine in Massachusetts (2024, 3,773 clinicians with data). Median for this group: 526. Middle half: 199 to 1,077.
Too few clinicians listed under Internal Medicine in Reading have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A higher Medicare-allowed amount than 90% of clinicians listed under Internal Medicine in Massachusetts (2024, 3,773 clinicians with data). Median for this group: $50,301. Middle half: $19,690 to $96,604.
Too few clinicians listed under Internal Medicine in Reading have Medicare Part B data for 2024 to compare.
Paid by Medicare
A higher Medicare payment amount than 90% of clinicians listed under Internal Medicine in Massachusetts (2024, 3,773 clinicians with data). Median for this group: $38,367. Middle half: $14,848 to $75,032.
Too few clinicians listed under Internal Medicine in Reading have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Internal Medicine in Massachusetts (2024, 3,673 clinicians with data). Median for this group: 1,163. Middle half: 127 to 3,739.
Too few clinicians listed under Internal Medicine in Reading have Medicare Part D data for 2024 to compare.
Part D drug cost
Close to the middle for clinicians listed under Internal Medicine in Massachusetts (2024, 3,673 clinicians with data). Median for this group: $101,447. Middle half: $8,909 to $319,514.
Too few clinicians listed under Internal Medicine in Reading have Medicare Part D data for 2024 to compare.
9 active clinicians are listed under Internal Medicine with a practice address in Reading, MA (6,822 in Massachusetts).
Addresses are self-reported to NPPES and may be out of date.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services stayed about the same: 1,177 in 2020 and 1,266 in 2024.
- 2020: 1,177
- 2021: 1,262
- 2022: 1,174
- 2023: 1,177
- 2024: 1,266
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Medicare-allowed amount
Medicare-allowed amount increased 41% from $124,246 in 2020 to $175,209 in 2024.
- 2020: $124,246
- 2021: $165,855
- 2022: $167,201
- 2023: $164,696
- 2024: $175,209
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Paid by Medicare
Paid by Medicare increased 46% from $94,846 in 2020 to $138,878 in 2024.
- 2020: $94,846
- 2021: $129,424
- 2022: $130,134
- 2023: $130,686
- 2024: $138,878
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 65% from 861 in 2020 to 1,422 in 2024.
- 2020: 861
- 2021: 949
- 2022: 1,028
- 2023: 1,266
- 2024: 1,422
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30-day fills
30-day fills increased 71% from 2,016 in 2020 to 3,451 in 2024.
- 2020: 2,016
- 2021: 2,236
- 2022: 2,377
- 2023: 3,143
- 2024: 3,451
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Part D drug cost
Part D drug cost increased 262% from $34,242 in 2020 to $123,815 in 2024.
- 2020: $34,242
- 2021: $42,520
- 2022: $31,362
- 2023: $55,825
- 2024: $123,815
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $374.44 in 2020 to $967.92 in 2025.
- 2020: $374.44
- 2022: $22.00
- 2023: $313.88
- 2024: $972.53
- 2025: $967.92
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 – December 31, 2025): 52 records totaling $967.92.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| QOL Medical, LLC |
Food and Beverage
In-kind items and services
|
Sucraid | General | $33.02 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
|
TREMFYA | General | $31.63 |
| Madrigal Pharmaceuticals |
Food and Beverage
In-kind items and services
|
REZDIFFRA | General | $28.86 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
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TREMFYA | General | $27.79 |
| Phathom Pharmaceuticals, Inc. |
Food and Beverage
Cash or cash equivalent
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VOQUEZNA | General | $27.65 |
| Takeda Pharmaceuticals U.S.A., Inc. |
Food and Beverage
In-kind items and services
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ENTYVIO | General | $26.85 |
| Takeda Pharmaceuticals U.S.A., Inc. |
Food and Beverage
In-kind items and services
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ENTYVIO | General | $26.85 |
| Madrigal Pharmaceuticals |
Food and Beverage
In-kind items and services
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REZDIFFRA | General | $26.19 |
| Sanofi and Genzyme US Companies |
Food and Beverage
In-kind items and services
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DUPIXENT | General | $26.09 |
| Exact Sciences Corporation |
Food and Beverage
In-kind items and services
|
The Cologuard Plus Collection Kit | General | $24.79 |
| QOL Medical, LLC |
Food and Beverage
In-kind items and services
|
Sucraid | General | $23.79 |
| Madrigal Pharmaceuticals |
Food and Beverage
In-kind items and services
|
REZDIFFRA | General | $23.49 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
|
TREMFYA | General | $22.10 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
|
TREMFYA | General | $21.96 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
RINVOQ | General | $21.61 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
|
TREMFYA | General | $21.56 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
|
TREMFYA | General | $21.10 |
| Madrigal Pharmaceuticals |
Food and Beverage
In-kind items and services
|
REZDIFFRA | General | $21.08 |
| Takeda Pharmaceuticals U.S.A., Inc. |
Food and Beverage
In-kind items and services
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ENTYVIO | General | $20.76 |
| Takeda Pharmaceuticals U.S.A., Inc. |
Food and Beverage
In-kind items and services
|
ENTYVIO | General | $20.51 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
RINVOQ | General | $20.49 |
| Phathom Pharmaceuticals, Inc. |
Food and Beverage
Cash or cash equivalent
|
VOQUEZNA | General | $19.86 |
| Madrigal Pharmaceuticals |
Food and Beverage
In-kind items and services
|
REZDIFFRA | General | $19.47 |
| Takeda Pharmaceuticals U.S.A., Inc. |
Food and Beverage
In-kind items and services
|
ENTYVIO | General | $19.46 |
| Madrigal Pharmaceuticals |
Food and Beverage
In-kind items and services
|
REZDIFFRA | General | $19.32 |
(top 25 shown)
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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419 | 288 | $350.00 | $139.02 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
|
204 | 153 | $250.00 | $99.17 |
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G0439
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
|
113 | 113 | $275.00 | $141.59 |
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45385
Removal of polyps or growths of large bowel using an endoscope with mechanical snare
|
95 | 95 | $1350.00 | $262.53 |
|
43239
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope
|
73 | 72 | $890.00 | $111.04 |
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99222
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes
|
73 | 72 | $400.00 | $136.18 |
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99232
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
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52 | 37 | $250.00 | $82.25 |
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45380
Biopsy of large bowel using a flexible endoscope
|
47 | 46 | $1175.00 | $131.18 |
|
G0105
Colorectal cancer screening; colonoscopy on individual at high risk
|
44 | 44 | $880.00 | $191.68 |
|
43235
Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope
|
34 | 33 | $775.00 | $107.95 |
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93000
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
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25 | 24 | $77.00 | $15.77 |
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99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
|
25 | 25 | $309.00 | $121.55 |
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99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
|
14 | 14 | $415.00 | $180.61 |
|
45378
Diagnostic exam of large bowel using a flexible endoscope
|
13 | 13 | $900.00 | $184.83 |
|
99496
Transitional care management services for problem of high complexity
|
12 | 12 | $612.50 | $307.72 |
|
G0121
Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk
|
12 | 12 | $880.00 | $191.42 |
|
45331
Biopsy of lower large bowel using a flexible endoscope
|
11 | 11 | $425.00 | $76.45 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Omeprazole | Omeprazole | 228 | 18,667 | $2,954.24 | 110 |
| Famotidine | Famotidine | 150 | 12,708 | $2,421.76 | 78 |
| Lisinopril | Lisinopril | 92 | 7,680 | $632.80 | 38 |
| Atorvastatin Calcium | Atorvastatin Calcium | 89 | 7,900 | $1,157.74 | 40 |
| Metoprolol Succinate | Metoprolol Succinate | 67 | 5,098 | $914.53 | 27 |
| Amlodipine Besylate | Amlodipine Besylate | 52 | 4,440 | $322.65 | 24 |
| Pantoprazole Sodium | Pantoprazole Sodium | 52 | 3,991 | $839.40 | 24 |
| Lorazepam | Lorazepam | 40 | 1,108 | $99.37 | 22 |
| Alprazolam | Alprazolam | 34 | 1,260 | $244.25 | 12 |
| Levothyroxine Sodium | Levothyroxine Sodium | 34 | 2,938 | $373.67 | 17 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 33 | 2,970 | $1,564.38 | 20 |
| Sucralfate | Sucralfate | 32 | 1,860 | $2,376.82 | 15 |
| Simvastatin | Simvastatin | 31 | 2,790 | $185.17 | 15 |
| Metformin Hcl | Metformin Hcl | 29 | 1,822 | $108.69 | — |
| Atenolol | Atenolol | 26 | 2,235 | $251.73 | 12 |
| Losartan Potassium | Losartan Potassium | 26 | 2,100 | $387.42 | — |
| Trazodone Hcl | Trazodone Hcl | 24 | 1,738 | $206.70 | 11 |
| Lactulose | Lactulose | 22 | 848 | $383.78 | 11 |
| Eliquis | Apixaban | 22 | 1,048 | $18,923.96 | — |
| Hydrochlorothiazide | Hydrochlorothiazide | 21 | 1,480 | $111.15 | — |
| Mirtazapine | Mirtazapine | 21 | 670 | $260.66 | 11 |
| Ondansetron Hcl | Ondansetron Hcl | 21 | 227 | $196.05 | 12 |
| Furosemide | Furosemide | 20 | 1,330 | $47.32 | — |
| Dicyclomine Hcl | Dicyclomine Hcl | 17 | 281 | $134.07 | — |
| Mesalamine | Mesalamine | 17 | 712 | $4,475.86 | — |
(top 25 shown)
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 207R00000X
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.
NUCC Taxonomy Code: 207RG0100X
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20050427000247
MA
7113966458
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026
David Siegenberg Md Pc
20 Pondmeadow Dr, Reading, MA 018673222
Phone: 7819441166
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine - Nephrology
Doctor of Medicine (M.D.)
Nurse Practitioner - Adult Health
Nurse Practitioner
Nurse Practitioner - Family
Family Nurse Practitioner (Board Certified), Nurse Practitioner (Certified)
Nurse Practitioner
Career & Practice History
NPI enumerated June 05, 2006.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to November 2026.
NPI Administrative Meta
Other Internal Medicine Providers in Reading
- Dr. Lina Feldman, MD
- Dr. Anna Zlotina, MD
- Dr. Lily Narusevicius, MD
- Dr. Xiaohui Wang, MD PHD
- Dr. Joseph Taylor, MD
- Dr. Brian Casserly, MD
Mailing Address
30 New Crossing Rd, Suite # 310
Reading, MA 018673271
Phone: 7819441166